/* $OpenBSD: rcs.c,v 1.47 2008/05/11 12:13:41 tobias Exp $ */ /* * Copyright (c) 2004 Jean-Francois Brousseau * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include #include #include #include #include #include #include #include #include #include #include #include "diff.h" #include "rcs.h" #include "rcsprog.h" #include "rcsutil.h" #include "xmalloc.h" #define RCS_BUFSIZE 16384 #define RCS_BUFEXTSIZE 8192 #define RCS_KWEXP_SIZE 1024 /* RCS token types */ #define RCS_TOK_ERR -1 #define RCS_TOK_EOF 0 #define RCS_TOK_NUM 1 #define RCS_TOK_ID 2 #define RCS_TOK_STRING 3 #define RCS_TOK_SCOLON 4 #define RCS_TOK_COLON 5 #define RCS_TOK_HEAD 8 #define RCS_TOK_BRANCH 9 #define RCS_TOK_ACCESS 10 #define RCS_TOK_SYMBOLS 11 #define RCS_TOK_LOCKS 12 #define RCS_TOK_COMMENT 13 #define RCS_TOK_EXPAND 14 #define RCS_TOK_DATE 15 #define RCS_TOK_AUTHOR 16 #define RCS_TOK_STATE 17 #define RCS_TOK_NEXT 18 #define RCS_TOK_BRANCHES 19 #define RCS_TOK_DESC 20 #define RCS_TOK_LOG 21 #define RCS_TOK_TEXT 22 #define RCS_TOK_STRICT 23 #define RCS_TOK_COMMITID 24 #define RCS_ISKEY(t) (((t) >= RCS_TOK_HEAD) && ((t) <= RCS_TOK_BRANCHES)) #define RCS_NOSCOL 0x01 /* no terminating semi-colon */ #define RCS_VOPT 0x02 /* value is optional */ /* opaque parse data */ struct rcs_pdata { u_int rp_lines; char *rp_buf; size_t rp_blen; char *rp_bufend; size_t rp_tlen; /* pushback token buffer */ char rp_ptok[128]; int rp_pttype; /* token type, RCS_TOK_ERR if no token */ FILE *rp_file; }; #define RCS_TOKSTR(rfp) ((struct rcs_pdata *)rfp->rf_pdata)->rp_buf #define RCS_TOKLEN(rfp) ((struct rcs_pdata *)rfp->rf_pdata)->rp_tlen /* invalid characters in RCS symbol names */ static const char rcs_sym_invch[] = RCS_SYM_INVALCHAR; /* comment leaders, depending on the file's suffix */ static const struct rcs_comment { const char *rc_suffix; const char *rc_cstr; } rcs_comments[] = { { "1", ".\\\" " }, { "2", ".\\\" " }, { "3", ".\\\" " }, { "4", ".\\\" " }, { "5", ".\\\" " }, { "6", ".\\\" " }, { "7", ".\\\" " }, { "8", ".\\\" " }, { "9", ".\\\" " }, { "a", "-- " }, /* Ada */ { "ada", "-- " }, { "adb", "-- " }, { "asm", ";; " }, /* assembler (MS-DOS) */ { "ads", "-- " }, /* Ada */ { "bat", ":: " }, /* batch (MS-DOS) */ { "body", "-- " }, /* Ada */ { "c", " * " }, /* C */ { "c++", "// " }, /* C++ */ { "cc", "// " }, { "cpp", "// " }, { "cxx", "// " }, { "m", "// " }, /* Objective-C */ { "cl", ";;; " }, /* Common Lisp */ { "cmd", ":: " }, /* command (OS/2) */ { "cmf", "c " }, /* CM Fortran */ { "csh", "# " }, /* shell */ { "e", "# " }, /* efl */ { "epsf", "% " }, /* encapsulated postscript */ { "epsi", "% " }, /* encapsulated postscript */ { "el", "; " }, /* Emacs Lisp */ { "f", "c " }, /* Fortran */ { "for", "c " }, { "h", " * " }, /* C-header */ { "hh", "// " }, /* C++ header */ { "hpp", "// " }, { "hxx", "// " }, { "in", "# " }, /* for Makefile.in */ { "l", " * " }, /* lex */ { "mac", ";; " }, /* macro (DEC-10, MS-DOS, PDP-11, VMS, etc) */ { "mak", "# " }, /* makefile, e.g. Visual C++ */ { "me", ".\\\" " }, /* me-macros t/nroff */ { "ml", "; " }, /* mocklisp */ { "mm", ".\\\" " }, /* mm-macros t/nroff */ { "ms", ".\\\" " }, /* ms-macros t/nroff */ { "man", ".\\\" " }, /* man-macros t/nroff */ { "p", " * " }, /* pascal */ { "pas", " * " }, { "pl", "# " }, /* Perl (conflict with Prolog) */ { "pm", "# " }, /* Perl module */ { "ps", "% " }, /* postscript */ { "psw", "% " }, /* postscript wrap */ { "pswm", "% " }, /* postscript wrap */ { "r", "# " }, /* ratfor */ { "rc", " * " }, /* Microsoft Windows resource file */ { "red", "% " }, /* psl/rlisp */ { "sh", "# " }, /* shell */ { "sl", "% " }, /* psl */ { "spec", "-- " }, /* Ada */ { "tex", "% " }, /* tex */ { "y", " * " }, /* yacc */ { "ye", " * " }, /* yacc-efl */ { "yr", " * " }, /* yacc-ratfor */ }; struct rcs_kw rcs_expkw[] = { { "Author", RCS_KW_AUTHOR }, { "Date", RCS_KW_DATE }, { "Header", RCS_KW_HEADER }, { "Id", RCS_KW_ID }, { "Log", RCS_KW_LOG }, { "Name", RCS_KW_NAME }, { "RCSfile", RCS_KW_RCSFILE }, { "Revision", RCS_KW_REVISION }, { "Source", RCS_KW_SOURCE }, { "State", RCS_KW_STATE }, }; #define NB_COMTYPES (sizeof(rcs_comments)/sizeof(rcs_comments[0])) static struct rcs_key { char rk_str[16]; int rk_id; int rk_val; int rk_flags; } rcs_keys[] = { { "access", RCS_TOK_ACCESS, RCS_TOK_ID, RCS_VOPT }, { "author", RCS_TOK_AUTHOR, RCS_TOK_ID, 0 }, { "branch", RCS_TOK_BRANCH, RCS_TOK_NUM, RCS_VOPT }, { "branches", RCS_TOK_BRANCHES, RCS_TOK_NUM, RCS_VOPT }, { "comment", RCS_TOK_COMMENT, RCS_TOK_STRING, RCS_VOPT }, { "commitid", RCS_TOK_COMMITID, RCS_TOK_ID, 0 }, { "date", RCS_TOK_DATE, RCS_TOK_NUM, 0 }, { "desc", RCS_TOK_DESC, RCS_TOK_STRING, RCS_NOSCOL }, { "expand", RCS_TOK_EXPAND, RCS_TOK_STRING, RCS_VOPT }, { "head", RCS_TOK_HEAD, RCS_TOK_NUM, RCS_VOPT }, { "locks", RCS_TOK_LOCKS, RCS_TOK_ID, 0 }, { "log", RCS_TOK_LOG, RCS_TOK_STRING, RCS_NOSCOL }, { "next", RCS_TOK_NEXT, RCS_TOK_NUM, RCS_VOPT }, { "state", RCS_TOK_STATE, RCS_TOK_ID, RCS_VOPT }, { "strict", RCS_TOK_STRICT, 0, 0, }, { "symbols", RCS_TOK_SYMBOLS, 0, 0 }, { "text", RCS_TOK_TEXT, RCS_TOK_STRING, RCS_NOSCOL }, }; #define RCS_NKEYS (sizeof(rcs_keys)/sizeof(rcs_keys[0])) static const char *rcs_errstrs[] = { "No error", "No such entry", "Duplicate entry found", "Bad RCS number", "Invalid RCS symbol", "Parse error", }; #define RCS_NERR (sizeof(rcs_errstrs)/sizeof(rcs_errstrs[0])) int rcs_errno = RCS_ERR_NOERR; char *timezone_flag = NULL; int rcs_patch_lines(struct rcs_lines *, struct rcs_lines *); static int rcs_movefile(char *, char *, mode_t, u_int); static void rcs_parse_init(RCSFILE *); static int rcs_parse_admin(RCSFILE *); static int rcs_parse_delta(RCSFILE *); static void rcs_parse_deltas(RCSFILE *, RCSNUM *); static int rcs_parse_deltatext(RCSFILE *); static void rcs_parse_deltatexts(RCSFILE *, RCSNUM *); static void rcs_parse_desc(RCSFILE *, RCSNUM *); static int rcs_parse_access(RCSFILE *); static int rcs_parse_symbols(RCSFILE *); static int rcs_parse_locks(RCSFILE *); static int rcs_parse_branches(RCSFILE *, struct rcs_delta *); static void rcs_freedelta(struct rcs_delta *); static void rcs_freepdata(struct rcs_pdata *); static int rcs_gettok(RCSFILE *); static int rcs_pushtok(RCSFILE *, const char *, int); static void rcs_growbuf(RCSFILE *); static void rcs_strprint(const u_char *, size_t, FILE *); static BUF *rcs_expand_keywords(char *, struct rcs_delta *, BUF *, int); RCSFILE * rcs_open(const char *path, int fd, int flags, ...) { int mode; mode_t fmode; RCSFILE *rfp; va_list vap; struct rcs_delta *rdp; struct rcs_lock *lkr; fmode = S_IRUSR|S_IRGRP|S_IROTH; flags &= 0xffff; /* ditch any internal flags */ if (flags & RCS_CREATE) { va_start(vap, flags); mode = va_arg(vap, int); va_end(vap); fmode = (mode_t)mode; } rfp = xcalloc(1, sizeof(*rfp)); rfp->rf_path = xstrdup(path); rfp->rf_flags = flags | RCS_SLOCK | RCS_SYNCED; rfp->rf_mode = fmode; rfp->rf_fd = fd; TAILQ_INIT(&(rfp->rf_delta)); TAILQ_INIT(&(rfp->rf_access)); TAILQ_INIT(&(rfp->rf_symbols)); TAILQ_INIT(&(rfp->rf_locks)); if (!(rfp->rf_flags & RCS_CREATE)) { rcs_parse_init(rfp); /* fill in rd_locker */ TAILQ_FOREACH(lkr, &(rfp->rf_locks), rl_list) { if ((rdp = rcs_findrev(rfp, lkr->rl_num)) == NULL) { rcs_close(rfp); return (NULL); } rdp->rd_locker = xstrdup(lkr->rl_name); } } return (rfp); } /* * rcs_close() * * Close an RCS file handle. */ void rcs_close(RCSFILE *rfp) { struct rcs_delta *rdp; struct rcs_access *rap; struct rcs_lock *rlp; struct rcs_sym *rsp; if ((rfp->rf_flags & RCS_WRITE) && !(rfp->rf_flags & RCS_SYNCED)) rcs_write(rfp); while (!TAILQ_EMPTY(&(rfp->rf_delta))) { rdp = TAILQ_FIRST(&(rfp->rf_delta)); TAILQ_REMOVE(&(rfp->rf_delta), rdp, rd_list); rcs_freedelta(rdp); } while (!TAILQ_EMPTY(&(rfp->rf_access))) { rap = TAILQ_FIRST(&(rfp->rf_access)); TAILQ_REMOVE(&(rfp->rf_access), rap, ra_list); xfree(rap->ra_name); xfree(rap); } while (!TAILQ_EMPTY(&(rfp->rf_symbols))) { rsp = TAILQ_FIRST(&(rfp->rf_symbols)); TAILQ_REMOVE(&(rfp->rf_symbols), rsp, rs_list); rcsnum_free(rsp->rs_num); xfree(rsp->rs_name); xfree(rsp); } while (!TAILQ_EMPTY(&(rfp->rf_locks))) { rlp = TAILQ_FIRST(&(rfp->rf_locks)); TAILQ_REMOVE(&(rfp->rf_locks), rlp, rl_list); rcsnum_free(rlp->rl_num); xfree(rlp->rl_name); xfree(rlp); } if (rfp->rf_head != NULL) rcsnum_free(rfp->rf_head); if (rfp->rf_branch != NULL) rcsnum_free(rfp->rf_branch); if (rfp->rf_path != NULL) xfree(rfp->rf_path); if (rfp->rf_comment != NULL) xfree(rfp->rf_comment); if (rfp->rf_expand != NULL) xfree(rfp->rf_expand); if (rfp->rf_desc != NULL) xfree(rfp->rf_desc); if (rfp->rf_pdata != NULL) rcs_freepdata(rfp->rf_pdata); xfree(rfp); } /* * rcs_write() * * Write the contents of the RCS file handle to disk in the file whose * path is in . */ void rcs_write(RCSFILE *rfp) { FILE *fp; char numbuf[RCS_REV_BUFSZ], *fn; struct rcs_access *ap; struct rcs_sym *symp; struct rcs_branch *brp; struct rcs_delta *rdp; struct rcs_lock *lkp; size_t len; int fd; fn = NULL; fd = -1; if (rfp->rf_flags & RCS_SYNCED) return; /* Write operations need the whole file parsed */ rcs_parse_deltatexts(rfp, NULL); (void)xasprintf(&fn, "%s/rcs.XXXXXXXXXX", rcs_tmpdir); if ((fd = mkstemp(fn)) == -1) err(1, "%s", fn); if ((fp = fdopen(fd, "w+")) == NULL) { int saved_errno; saved_errno = errno; (void)unlink(fn); errno = saved_errno; err(1, "%s", fn); } if (rfp->rf_head != NULL) rcsnum_tostr(rfp->rf_head, numbuf, sizeof(numbuf)); else numbuf[0] = '\0'; fprintf(fp, "head\t%s;\n", numbuf); if (rfp->rf_branch != NULL) { rcsnum_tostr(rfp->rf_branch, numbuf, sizeof(numbuf)); fprintf(fp, "branch\t%s;\n", numbuf); } fputs("access", fp); TAILQ_FOREACH(ap, &(rfp->rf_access), ra_list) { fprintf(fp, "\n\t%s", ap->ra_name); } fputs(";\n", fp); fprintf(fp, "symbols"); TAILQ_FOREACH(symp, &(rfp->rf_symbols), rs_list) { if (RCSNUM_ISBRANCH(symp->rs_num)) rcsnum_addmagic(symp->rs_num); rcsnum_tostr(symp->rs_num, numbuf, sizeof(numbuf)); fprintf(fp, "\n\t%s:%s", symp->rs_name, numbuf); } fprintf(fp, ";\n"); fprintf(fp, "locks"); TAILQ_FOREACH(lkp, &(rfp->rf_locks), rl_list) { rcsnum_tostr(lkp->rl_num, numbuf, sizeof(numbuf)); fprintf(fp, "\n\t%s:%s", lkp->rl_name, numbuf); } fprintf(fp, ";"); if (rfp->rf_flags & RCS_SLOCK) fprintf(fp, " strict;"); fputc('\n', fp); fputs("comment\t@", fp); if (rfp->rf_comment != NULL) { rcs_strprint((const u_char *)rfp->rf_comment, strlen(rfp->rf_comment), fp); fputs("@;\n", fp); } else fputs("# @;\n", fp); if (rfp->rf_expand != NULL) { fputs("expand @", fp); rcs_strprint((const u_char *)rfp->rf_expand, strlen(rfp->rf_expand), fp); fputs("@;\n", fp); } fputs("\n\n", fp); TAILQ_FOREACH(rdp, &(rfp->rf_delta), rd_list) { fprintf(fp, "%s\n", rcsnum_tostr(rdp->rd_num, numbuf, sizeof(numbuf))); fprintf(fp, "date\t%d.%02d.%02d.%02d.%02d.%02d;", rdp->rd_date.tm_year + 1900, rdp->rd_date.tm_mon + 1, rdp->rd_date.tm_mday, rdp->rd_date.tm_hour, rdp->rd_date.tm_min, rdp->rd_date.tm_sec); fprintf(fp, "\tauthor %s;\tstate %s;\n", rdp->rd_author, rdp->rd_state); fputs("branches", fp); TAILQ_FOREACH(brp, &(rdp->rd_branches), rb_list) { fprintf(fp, "\n\t%s", rcsnum_tostr(brp->rb_num, numbuf, sizeof(numbuf))); } fputs(";\n", fp); fprintf(fp, "next\t%s;\n\n", rcsnum_tostr(rdp->rd_next, numbuf, sizeof(numbuf))); } fputs("\ndesc\n@", fp); if (rfp->rf_desc != NULL && (len = strlen(rfp->rf_desc)) > 0) { rcs_strprint((const u_char *)rfp->rf_desc, len, fp); if (rfp->rf_desc[len-1] != '\n') fputc('\n', fp); } fputs("@\n", fp); /* deltatexts */ TAILQ_FOREACH(rdp, &(rfp->rf_delta), rd_list) { fprintf(fp, "\n\n%s\n", rcsnum_tostr(rdp->rd_num, numbuf, sizeof(numbuf))); fputs("log\n@", fp); if (rdp->rd_log != NULL) { len = strlen(rdp->rd_log); rcs_strprint((const u_char *)rdp->rd_log, len, fp); if (rdp->rd_log[len-1] != '\n') fputc('\n', fp); } fputs("@\ntext\n@", fp); if (rdp->rd_text != NULL) rcs_strprint(rdp->rd_text, rdp->rd_tlen, fp); fputs("@\n", fp); } (void)fclose(fp); if (rcs_movefile(fn, rfp->rf_path, rfp->rf_mode, rfp->rf_flags) == -1) { (void)unlink(fn); errx(1, "rcs_movefile failed"); } rfp->rf_flags |= RCS_SYNCED; if (fn != NULL) xfree(fn); } /* * rcs_movefile() * * Move a file using rename(2) if possible and copying if not. * Returns 0 on success, -1 on failure. */ static int rcs_movefile(char *from, char *to, mode_t perm, u_int to_flags) { FILE *src, *dst; size_t nread, nwritten; char *buf; int ret; ret = -1; if (rename(from, to) == 0) { if (chmod(to, perm) == -1) { warn("%s", to); return (-1); } return (0); } else if (errno != EXDEV) { warn("failed to access temp RCS output file"); return (-1); } if ((chmod(to, S_IWUSR) == -1) && !(to_flags & RCS_CREATE)) { warnx("chmod(%s, 0%o) failed", to, S_IWUSR); return (-1); } /* different filesystem, have to copy the file */ if ((src = fopen(from, "r")) == NULL) { warn("%s", from); return (-1); } if ((dst = fopen(to, "w")) == NULL) { warn("%s", to); return (-1); } if (fchmod(fileno(dst), perm)) { warn("%s", to); (void)unlink(to); return (-1); } buf = xmalloc(MAXBSIZE); while ((nread = fread(buf, sizeof(char), MAXBSIZE, src)) != 0) { if (ferror(src)) { warnx("failed to read `%s'", from); (void)unlink(to); goto out; } nwritten = fwrite(buf, sizeof(char), nread, dst); if (nwritten != nread) { warnx("failed to write `%s'", to); (void)unlink(to); goto out; } } ret = 0; (void)fclose(src); (void)fclose(dst); (void)unlink(from); out: xfree(buf); return (ret); } /* * rcs_head_get() * * Retrieve the revision number of the head revision for the RCS file . */ const RCSNUM * rcs_head_get(RCSFILE *file) { return (file->rf_head); } /* * rcs_head_set() * * Set the revision number of the head revision for the RCS file to * , which must reference a valid revision within the file. */ int rcs_head_set(RCSFILE *file, RCSNUM *rev) { if (rcs_findrev(file, rev) == NULL) return (-1); if (file->rf_head == NULL) file->rf_head = rcsnum_alloc(); rcsnum_cpy(rev, file->rf_head, 0); file->rf_flags &= ~RCS_SYNCED; return (0); } /* * rcs_branch_get() * * Retrieve the default branch number for the RCS file . * Returns the number on success. If NULL is returned, then there is no * default branch for this file. */ const RCSNUM * rcs_branch_get(RCSFILE *file) { return (file->rf_branch); } /* * rcs_branch_set() * * Set the default branch for the RCS file to . * Returns 0 on success, -1 on failure. */ int rcs_branch_set(RCSFILE *file, const RCSNUM *bnum) { if (file->rf_branch == NULL) file->rf_branch = rcsnum_alloc(); rcsnum_cpy(bnum, file->rf_branch, 0); file->rf_flags &= ~RCS_SYNCED; return (0); } /* * rcs_access_add() * * Add the login name to the access list for the RCS file . * Returns 0 on success, or -1 on failure. */ int rcs_access_add(RCSFILE *file, const char *login) { struct rcs_access *ap; /* first look for duplication */ TAILQ_FOREACH(ap, &(file->rf_access), ra_list) { if (strcmp(ap->ra_name, login) == 0) { rcs_errno = RCS_ERR_DUPENT; return (-1); } } ap = xmalloc(sizeof(*ap)); ap->ra_name = xstrdup(login); TAILQ_INSERT_TAIL(&(file->rf_access), ap, ra_list); /* not synced anymore */ file->rf_flags &= ~RCS_SYNCED; return (0); } /* * rcs_access_remove() * * Remove an entry with login name from the access list of the RCS * file . * Returns 0 on success, or -1 on failure. */ int rcs_access_remove(RCSFILE *file, const char *login) { struct rcs_access *ap; TAILQ_FOREACH(ap, &(file->rf_access), ra_list) if (strcmp(ap->ra_name, login) == 0) break; if (ap == NULL) { rcs_errno = RCS_ERR_NOENT; return (-1); } TAILQ_REMOVE(&(file->rf_access), ap, ra_list); xfree(ap->ra_name); xfree(ap); /* not synced anymore */ file->rf_flags &= ~RCS_SYNCED; return (0); } /* * rcs_sym_add() * * Add a symbol to the list of symbols for the RCS file . The new symbol * is named and is bound to the RCS revision . * Returns 0 on success, or -1 on failure. */ int rcs_sym_add(RCSFILE *rfp, const char *sym, RCSNUM *snum) { struct rcs_sym *symp; if (!rcs_sym_check(sym)) { rcs_errno = RCS_ERR_BADSYM; return (-1); } /* first look for duplication */ TAILQ_FOREACH(symp, &(rfp->rf_symbols), rs_list) { if (strcmp(symp->rs_name, sym) == 0) { rcs_errno = RCS_ERR_DUPENT; return (-1); } } symp = xmalloc(sizeof(*symp)); symp->rs_name = xstrdup(sym); symp->rs_num = rcsnum_alloc(); rcsnum_cpy(snum, symp->rs_num, 0); TAILQ_INSERT_HEAD(&(rfp->rf_symbols), symp, rs_list); /* not synced anymore */ rfp->rf_flags &= ~RCS_SYNCED; return (0); } /* * rcs_sym_remove() * * Remove the symbol with name from the symbol list for the RCS file * . If no such symbol is found, the call fails and returns with an * error. * Returns 0 on success, or -1 on failure. */ int rcs_sym_remove(RCSFILE *file, const char *sym) { struct rcs_sym *symp; if (!rcs_sym_check(sym)) { rcs_errno = RCS_ERR_BADSYM; return (-1); } TAILQ_FOREACH(symp, &(file->rf_symbols), rs_list) if (strcmp(symp->rs_name, sym) == 0) break; if (symp == NULL) { rcs_errno = RCS_ERR_NOENT; return (-1); } TAILQ_REMOVE(&(file->rf_symbols), symp, rs_list); xfree(symp->rs_name); rcsnum_free(symp->rs_num); xfree(symp); /* not synced anymore */ file->rf_flags &= ~RCS_SYNCED; return (0); } /* * rcs_sym_getrev() * * Retrieve the RCS revision number associated with the symbol for the * RCS file . The returned value is a dynamically-allocated copy and * should be freed by the caller once they are done with it. * Returns the RCSNUM on success, or NULL on failure. */ RCSNUM * rcs_sym_getrev(RCSFILE *file, const char *sym) { RCSNUM *num; struct rcs_sym *symp; if (!rcs_sym_check(sym)) { rcs_errno = RCS_ERR_BADSYM; return (NULL); } num = NULL; TAILQ_FOREACH(symp, &(file->rf_symbols), rs_list) if (strcmp(symp->rs_name, sym) == 0) break; if (symp == NULL) { rcs_errno = RCS_ERR_NOENT; } else { num = rcsnum_alloc(); rcsnum_cpy(symp->rs_num, num, 0); } return (num); } /* * rcs_sym_check() * * Check the RCS symbol name for any unsupported characters. * Returns 1 if the tag is correct, 0 if it isn't valid. */ int rcs_sym_check(const char *sym) { int ret; const char *cp; ret = 1; cp = sym; if (!isalpha(*cp++)) return (0); for (; *cp != '\0'; cp++) if (!isgraph(*cp) || (strchr(rcs_sym_invch, *cp) != NULL)) { ret = 0; break; } return (ret); } /* * rcs_lock_getmode() * * Retrieve the locking mode of the RCS file . */ int rcs_lock_getmode(RCSFILE *file) { return (file->rf_flags & RCS_SLOCK) ? RCS_LOCK_STRICT : RCS_LOCK_LOOSE; } /* * rcs_lock_setmode() * * Set the locking mode of the RCS file to , which must either * be RCS_LOCK_LOOSE or RCS_LOCK_STRICT. * Returns the previous mode on success, or -1 on failure. */ int rcs_lock_setmode(RCSFILE *file, int mode) { int pmode; pmode = rcs_lock_getmode(file); if (mode == RCS_LOCK_STRICT) file->rf_flags |= RCS_SLOCK; else if (mode == RCS_LOCK_LOOSE) file->rf_flags &= ~RCS_SLOCK; else errx(1, "rcs_lock_setmode: invalid mode `%d'", mode); file->rf_flags &= ~RCS_SYNCED; return (pmode); } /* * rcs_lock_add() * * Add an RCS lock for the user on revision . * Returns 0 on success, or -1 on failure. */ int rcs_lock_add(RCSFILE *file, const char *user, RCSNUM *rev) { struct rcs_lock *lkp; /* first look for duplication */ TAILQ_FOREACH(lkp, &(file->rf_locks), rl_list) { if (strcmp(lkp->rl_name, user) == 0 && rcsnum_cmp(rev, lkp->rl_num, 0) == 0) { rcs_errno = RCS_ERR_DUPENT; return (-1); } } lkp = xmalloc(sizeof(*lkp)); lkp->rl_name = xstrdup(user); lkp->rl_num = rcsnum_alloc(); rcsnum_cpy(rev, lkp->rl_num, 0); TAILQ_INSERT_TAIL(&(file->rf_locks), lkp, rl_list); /* not synced anymore */ file->rf_flags &= ~RCS_SYNCED; return (0); } /* * rcs_lock_remove() * * Remove the RCS lock on revision . * Returns 0 on success, or -1 on failure. */ int rcs_lock_remove(RCSFILE *file, const char *user, RCSNUM *rev) { struct rcs_lock *lkp; TAILQ_FOREACH(lkp, &(file->rf_locks), rl_list) { if (strcmp(lkp->rl_name, user) == 0 && rcsnum_cmp(lkp->rl_num, rev, 0) == 0) break; } if (lkp == NULL) { rcs_errno = RCS_ERR_NOENT; return (-1); } TAILQ_REMOVE(&(file->rf_locks), lkp, rl_list); rcsnum_free(lkp->rl_num); xfree(lkp->rl_name); xfree(lkp); /* not synced anymore */ file->rf_flags &= ~RCS_SYNCED; return (0); } /* * rcs_desc_get() * * Retrieve the description for the RCS file . */ const char * rcs_desc_get(RCSFILE *file) { return (file->rf_desc); } /* * rcs_desc_set() * * Set the description for the RCS file . */ void rcs_desc_set(RCSFILE *file, const char *desc) { char *tmp; tmp = xstrdup(desc); if (file->rf_desc != NULL) xfree(file->rf_desc); file->rf_desc = tmp; file->rf_flags &= ~RCS_SYNCED; } /* * rcs_comment_lookup() * * Lookup the assumed comment leader based on a file's suffix. * Returns a pointer to the string on success, or NULL on failure. */ const char * rcs_comment_lookup(const char *filename) { int i; const char *sp; if ((sp = strrchr(filename, '.')) == NULL) { rcs_errno = RCS_ERR_NOENT; return (NULL); } sp++; for (i = 0; i < (int)NB_COMTYPES; i++) if (strcmp(rcs_comments[i].rc_suffix, sp) == 0) return (rcs_comments[i].rc_cstr); return (NULL); } /* * rcs_comment_get() * * Retrieve the comment leader for the RCS file . */ const char * rcs_comment_get(RCSFILE *file) { return (file->rf_comment); } /* * rcs_comment_set() * * Set the comment leader for the RCS file . */ void rcs_comment_set(RCSFILE *file, const char *comment) { char *tmp; tmp = xstrdup(comment); if (file->rf_comment != NULL) xfree(file->rf_comment); file->rf_comment = tmp; file->rf_flags &= ~RCS_SYNCED; } /* * rcs_tag_resolve() * * Retrieve the revision number corresponding to the tag for the RCS * file . */ RCSNUM * rcs_tag_resolve(RCSFILE *file, const char *tag) { RCSNUM *num; if ((num = rcsnum_parse(tag)) == NULL) { num = rcs_sym_getrev(file, tag); } return (num); } int rcs_patch_lines(struct rcs_lines *dlines, struct rcs_lines *plines) { char op, *ep; struct rcs_line *lp, *dlp, *ndlp; int i, lineno, nbln; u_char tmp; dlp = TAILQ_FIRST(&(dlines->l_lines)); lp = TAILQ_FIRST(&(plines->l_lines)); /* skip first bogus line */ for (lp = TAILQ_NEXT(lp, l_list); lp != NULL; lp = TAILQ_NEXT(lp, l_list)) { if (lp->l_len < 2) errx(1, "line too short, RCS patch seems broken"); op = *(lp->l_line); /* NUL-terminate line buffer for strtol() safety. */ tmp = lp->l_line[lp->l_len - 1]; lp->l_line[lp->l_len - 1] = '\0'; lineno = (int)strtol((lp->l_line + 1), &ep, 10); if (lineno > dlines->l_nblines || lineno < 0 || *ep != ' ') errx(1, "invalid line specification in RCS patch"); ep++; nbln = (int)strtol(ep, &ep, 10); /* Restore the last byte of the buffer */ lp->l_line[lp->l_len - 1] = tmp; if (nbln < 0) errx(1, "invalid line number specification in RCS patch"); /* find the appropriate line */ for (;;) { if (dlp == NULL) break; if (dlp->l_lineno == lineno) break; if (dlp->l_lineno > lineno) { dlp = TAILQ_PREV(dlp, rcs_tqh, l_list); } else if (dlp->l_lineno < lineno) { if (((ndlp = TAILQ_NEXT(dlp, l_list)) == NULL) || ndlp->l_lineno > lineno) break; dlp = ndlp; } } if (dlp == NULL) errx(1, "can't find referenced line in RCS patch"); if (op == 'd') { for (i = 0; (i < nbln) && (dlp != NULL); i++) { ndlp = TAILQ_NEXT(dlp, l_list); TAILQ_REMOVE(&(dlines->l_lines), dlp, l_list); xfree(dlp); dlp = ndlp; /* last line is gone - reset dlp */ if (dlp == NULL) { ndlp = TAILQ_LAST(&(dlines->l_lines), rcs_tqh); dlp = ndlp; } } } else if (op == 'a') { for (i = 0; i < nbln; i++) { ndlp = lp; lp = TAILQ_NEXT(lp, l_list); if (lp == NULL) errx(1, "truncated RCS patch"); TAILQ_REMOVE(&(plines->l_lines), lp, l_list); TAILQ_INSERT_AFTER(&(dlines->l_lines), dlp, lp, l_list); dlp = lp; /* we don't want lookup to block on those */ lp->l_lineno = lineno; lp = ndlp; } } else errx(1, "unknown RCS patch operation `%c'", op); /* last line of the patch, done */ if (lp->l_lineno == plines->l_nblines) break; } /* once we're done patching, rebuild the line numbers */ lineno = 0; TAILQ_FOREACH(lp, &(dlines->l_lines), l_list) lp->l_lineno = lineno++; dlines->l_nblines = lineno - 1; return (0); } /* * rcs_getrev() * * Get the whole contents of revision from the RCSFILE . The * returned buffer is dynamically allocated and should be released using * rcs_buf_free() once the caller is done using it. */ BUF* rcs_getrev(RCSFILE *rfp, RCSNUM *frev) { u_int i, numlen; int isbranch, lookonbranch, found; size_t dlen, plen, len; RCSNUM *crev, *rev, *brev; BUF *rbuf; struct rcs_delta *rdp = NULL; struct rcs_branch *rb; u_char *data, *patch; if (rfp->rf_head == NULL) return (NULL); if (frev == RCS_HEAD_REV) rev = rfp->rf_head; else rev = frev; /* XXX rcsnum_cmp() */ for (i = 0; i < rfp->rf_head->rn_len; i++) { if (rfp->rf_head->rn_id[i] < rev->rn_id[i]) { rcs_errno = RCS_ERR_NOENT; return (NULL); } } /* No matter what, we're going to need up the the description parsed */ rcs_parse_desc(rfp, NULL); rdp = rcs_findrev(rfp, rfp->rf_head); if (rdp == NULL) { warnx("failed to get RCS HEAD revision"); return (NULL); } if (rdp->rd_tlen == 0) rcs_parse_deltatexts(rfp, rfp->rf_head); len = rdp->rd_tlen; if (len == 0) { rbuf = rcs_buf_alloc(1, 0); rcs_buf_empty(rbuf); return (rbuf); } rbuf = rcs_buf_alloc(len, BUF_AUTOEXT); rcs_buf_append(rbuf, rdp->rd_text, len); isbranch = 0; brev = NULL; /* * If a branch was passed, get the latest revision on it. */ if (RCSNUM_ISBRANCH(rev)) { brev = rev; rdp = rcs_findrev(rfp, rev); if (rdp == NULL) return (NULL); rev = rdp->rd_num; } else { if (RCSNUM_ISBRANCHREV(rev)) { brev = rcsnum_revtobr(rev); isbranch = 1; } } lookonbranch = 0; crev = NULL; /* Apply patches backwards to get the right version. */ do { found = 0; if (rcsnum_cmp(rfp->rf_head, rev, 0) == 0) break; if (isbranch == 1 && rdp->rd_num->rn_len < rev->rn_len && !TAILQ_EMPTY(&(rdp->rd_branches))) lookonbranch = 1; if (isbranch && lookonbranch == 1) { lookonbranch = 0; TAILQ_FOREACH(rb, &(rdp->rd_branches), rb_list) { /* XXX rcsnum_cmp() is totally broken for * this purpose. */ numlen = MIN(brev->rn_len, rb->rb_num->rn_len); for (i = 0; i < numlen; i++) { if (rb->rb_num->rn_id[i] != brev->rn_id[i]) break; } if (i == numlen) { crev = rb->rb_num; found = 1; break; } } if (found == 0) crev = rdp->rd_next; } else { crev = rdp->rd_next; } rdp = rcs_findrev(rfp, crev); if (rdp == NULL) { rcs_buf_free(rbuf); return (NULL); } plen = rdp->rd_tlen; dlen = rcs_buf_len(rbuf); patch = rdp->rd_text; data = rcs_buf_release(rbuf); /* check if we have parsed this rev's deltatext */ if (rdp->rd_tlen == 0) rcs_parse_deltatexts(rfp, rdp->rd_num); rbuf = rcs_patchfile(data, dlen, patch, plen, rcs_patch_lines); if (rbuf == NULL) break; } while (rcsnum_cmp(crev, rev, 0) != 0); return (rbuf); } void rcs_delta_stats(struct rcs_delta *rdp, int *ladded, int *lremoved) { struct rcs_lines *plines; struct rcs_line *lp; int added, i, lineno, nbln, removed; char op, *ep; u_char tmp; added = removed = 0; plines = rcs_splitlines(rdp->rd_text, rdp->rd_tlen); lp = TAILQ_FIRST(&(plines->l_lines)); /* skip first bogus line */ for (lp = TAILQ_NEXT(lp, l_list); lp != NULL; lp = TAILQ_NEXT(lp, l_list)) { if (lp->l_len < 2) errx(1, "line too short, RCS patch seems broken"); op = *(lp->l_line); /* NUL-terminate line buffer for strtol() safety. */ tmp = lp->l_line[lp->l_len - 1]; lp->l_line[lp->l_len - 1] = '\0'; lineno = (int)strtol((lp->l_line + 1), &ep, 10); ep++; nbln = (int)strtol(ep, &ep, 10); /* Restore the last byte of the buffer */ lp->l_line[lp->l_len - 1] = tmp; if (nbln < 0) errx(1, "invalid line number specification " "in RCS patch"); if (op == 'a') { added += nbln; for (i = 0; i < nbln; i++) { lp = TAILQ_NEXT(lp, l_list); if (lp == NULL) errx(1, "truncated RCS patch"); } } else if (op == 'd') removed += nbln; else errx(1, "unknown RCS patch operation '%c'", op); } rcs_freelines(plines); *ladded = added; *lremoved = removed; } /* * rcs_rev_add() * * Add a revision to the RCS file . The new revision's number can be * specified in (which can also be RCS_HEAD_REV, in which case the * new revision will have a number equal to the previous head revision plus * one). The argument specifies the log message for that revision, and * specifies the revision's date (a value of -1 is * equivalent to using the current time). * If is NULL, set the author for this revision to the current user. * Otherwise, set it to . * Returns 0 on success, or -1 on failure. */ int rcs_rev_add(RCSFILE *rf, RCSNUM *rev, const char *msg, time_t date, const char *username) { time_t now; struct passwd *pw; struct rcs_delta *ordp, *rdp; if (rev == RCS_HEAD_REV) { if (rf->rf_flags & RCS_CREATE) { if ((rev = rcsnum_parse(RCS_HEAD_INIT)) == NULL) return (-1); rf->rf_head = rcsnum_alloc(); rcsnum_cpy(rev, rf->rf_head, 0); } else { rev = rcsnum_inc(rf->rf_head); } } else { if ((rdp = rcs_findrev(rf, rev)) != NULL) { rcs_errno = RCS_ERR_DUPENT; return (-1); } } if ((pw = getpwuid(getuid())) == NULL) errx(1, "getpwuid failed"); rdp = xcalloc(1, sizeof(*rdp)); TAILQ_INIT(&(rdp->rd_branches)); rdp->rd_num = rcsnum_alloc(); rcsnum_cpy(rev, rdp->rd_num, 0); rdp->rd_next = rcsnum_alloc(); if (!(rf->rf_flags & RCS_CREATE)) { /* next should point to the previous HEAD */ ordp = TAILQ_FIRST(&(rf->rf_delta)); rcsnum_cpy(ordp->rd_num, rdp->rd_next, 0); } if (username == NULL) username = pw->pw_name; rdp->rd_author = xstrdup(username); rdp->rd_state = xstrdup(RCS_STATE_EXP); rdp->rd_log = xstrdup(msg); if (date != (time_t)(-1)) now = date; else time(&now); gmtime_r(&now, &(rdp->rd_date)); TAILQ_INSERT_HEAD(&(rf->rf_delta), rdp, rd_list); rf->rf_ndelta++; /* not synced anymore */ rf->rf_flags &= ~RCS_SYNCED; return (0); } /* * rcs_rev_remove() * * Remove the revision whose number is from the RCS file . */ int rcs_rev_remove(RCSFILE *rf, RCSNUM *rev) { char *path_tmp1, *path_tmp2; struct rcs_delta *rdp, *prevrdp, *nextrdp; BUF *newdeltatext, *nextbuf, *prevbuf, *newdiff; nextrdp = prevrdp = NULL; path_tmp1 = path_tmp2 = NULL; if (rev == RCS_HEAD_REV) rev = rf->rf_head; /* do we actually have that revision? */ if ((rdp = rcs_findrev(rf, rev)) == NULL) { rcs_errno = RCS_ERR_NOENT; return (-1); } /* * This is confusing, the previous delta is next in the TAILQ list. * the next delta is the previous one in the TAILQ list. * * When the HEAD revision got specified, nextrdp will be NULL. * When the first revision got specified, prevrdp will be NULL. */ prevrdp = (struct rcs_delta *)TAILQ_NEXT(rdp, rd_list); nextrdp = (struct rcs_delta *)TAILQ_PREV(rdp, rcs_tqh, rd_list); newdeltatext = prevbuf = nextbuf = NULL; if (prevrdp != NULL) { if ((prevbuf = rcs_getrev(rf, prevrdp->rd_num)) == NULL) errx(1, "error getting revision"); } if (prevrdp != NULL && nextrdp != NULL) { if ((nextbuf = rcs_getrev(rf, nextrdp->rd_num)) == NULL) errx(1, "error getting revision"); newdiff = rcs_buf_alloc(64, BUF_AUTOEXT); /* calculate new diff */ (void)xasprintf(&path_tmp1, "%s/diff1.XXXXXXXXXX", rcs_tmpdir); rcs_buf_write_stmp(nextbuf, path_tmp1); rcs_buf_free(nextbuf); (void)xasprintf(&path_tmp2, "%s/diff2.XXXXXXXXXX", rcs_tmpdir); rcs_buf_write_stmp(prevbuf, path_tmp2); rcs_buf_free(prevbuf); diff_format = D_RCSDIFF; if (diffreg(path_tmp1, path_tmp2, newdiff, 0) == D_ERROR) errx(1, "diffreg failed"); newdeltatext = newdiff; } else if (nextrdp == NULL && prevrdp != NULL) { newdeltatext = prevbuf; } if (newdeltatext != NULL) { if (rcs_deltatext_set(rf, prevrdp->rd_num, newdeltatext) < 0) errx(1, "error setting new deltatext"); } TAILQ_REMOVE(&(rf->rf_delta), rdp, rd_list); /* update pointers */ if (prevrdp != NULL && nextrdp != NULL) { rcsnum_cpy(prevrdp->rd_num, nextrdp->rd_next, 0); } else if (prevrdp != NULL) { if (rcs_head_set(rf, prevrdp->rd_num) < 0) errx(1, "rcs_head_set failed"); } else if (nextrdp != NULL) { rcsnum_free(nextrdp->rd_next); nextrdp->rd_next = rcsnum_alloc(); } else { rcsnum_free(rf->rf_head); rf->rf_head = NULL; } rf->rf_ndelta--; rf->rf_flags &= ~RCS_SYNCED; rcs_freedelta(rdp); if (path_tmp1 != NULL) xfree(path_tmp1); if (path_tmp2 != NULL) xfree(path_tmp2); return (0); } /* * rcs_findrev() * * Find a specific revision's delta entry in the tree of the RCS file . * The revision number is given in . * * If the given revision is a branch number, we translate it into the latest * revision on the branch. * * Returns a pointer to the delta on success, or NULL on failure. */ struct rcs_delta * rcs_findrev(RCSFILE *rfp, RCSNUM *rev) { u_int cmplen; struct rcs_delta *rdp; RCSNUM *brev, *frev; /* * We need to do more parsing if the last revision in the linked list * is greater than the requested revision. */ rdp = TAILQ_LAST(&(rfp->rf_delta), rcs_dlist); if (rdp == NULL || rcsnum_cmp(rdp->rd_num, rev, 0) == -1) { rcs_parse_deltas(rfp, rev); } /* * Translate a branch into the latest revision on the branch itself. */ if (RCSNUM_ISBRANCH(rev)) { brev = rcsnum_brtorev(rev); frev = brev; for (;;) { rdp = rcs_findrev(rfp, frev); if (rdp == NULL) return (NULL); if (rdp->rd_next->rn_len == 0) break; frev = rdp->rd_next; } rcsnum_free(brev); return (rdp); } cmplen = rev->rn_len; TAILQ_FOREACH(rdp, &(rfp->rf_delta), rd_list) { if (rcsnum_cmp(rdp->rd_num, rev, cmplen) == 0) return (rdp); } return (NULL); } /* * rcs_kwexp_set() * * Set the keyword expansion mode to use on the RCS file to . */ void rcs_kwexp_set(RCSFILE *file, int mode) { int i; char *tmp, buf[8] = ""; if (RCS_KWEXP_INVAL(mode)) return; i = 0; if (mode == RCS_KWEXP_NONE) buf[0] = 'b'; else if (mode == RCS_KWEXP_OLD) buf[0] = 'o'; else { if (mode & RCS_KWEXP_NAME) buf[i++] = 'k'; if (mode & RCS_KWEXP_VAL) buf[i++] = 'v'; if (mode & RCS_KWEXP_LKR) buf[i++] = 'l'; } tmp = xstrdup(buf); if (file->rf_expand != NULL) xfree(file->rf_expand); file->rf_expand = tmp; /* not synced anymore */ file->rf_flags &= ~RCS_SYNCED; } /* * rcs_kwexp_get() * * Retrieve the keyword expansion mode to be used for the RCS file . */ int rcs_kwexp_get(RCSFILE *file) { return rcs_kflag_get(file->rf_expand); } /* * rcs_kflag_get() * * Get the keyword expansion mode from a set of character flags given in * and return the appropriate flag mask. In case of an error, the * returned mask will have the RCS_KWEXP_ERR bit set to 1. */ int rcs_kflag_get(const char *flags) { int fl; size_t len; const char *fp; fl = 0; len = strlen(flags); for (fp = flags; *fp != '\0'; fp++) { if (*fp == 'k') fl |= RCS_KWEXP_NAME; else if (*fp == 'v') fl |= RCS_KWEXP_VAL; else if (*fp == 'l') fl |= RCS_KWEXP_LKR; else if (*fp == 'o') { if (len != 1) fl |= RCS_KWEXP_ERR; fl |= RCS_KWEXP_OLD; } else if (*fp == 'b') { if (len != 1) fl |= RCS_KWEXP_ERR; } else /* unknown letter */ fl |= RCS_KWEXP_ERR; } return (fl); } /* * rcs_errstr() * * Get the error string matching the RCS error code . */ const char * rcs_errstr(int code) { const char *esp; if (code < 0 || (code >= (int)RCS_NERR && code != RCS_ERR_ERRNO)) esp = NULL; else if (code == RCS_ERR_ERRNO) esp = strerror(errno); else esp = rcs_errstrs[code]; return (esp); } /* rcs_parse_deltas() * * Parse deltas. If is not NULL, parse only as far as that * revision. If is NULL, parse all deltas. */ static void rcs_parse_deltas(RCSFILE *rfp, RCSNUM *rev) { int ret; struct rcs_delta *enddelta; if ((rfp->rf_flags & PARSED_DELTAS) || (rfp->rf_flags & RCS_CREATE)) return; for (;;) { ret = rcs_parse_delta(rfp); if (rev != NULL) { enddelta = TAILQ_LAST(&(rfp->rf_delta), rcs_dlist); if (rcsnum_cmp(enddelta->rd_num, rev, 0) == 0) break; } if (ret == 0) { rfp->rf_flags |= PARSED_DELTAS; break; } else if (ret == -1) errx(1, "error parsing deltas"); } } /* rcs_parse_deltatexts() * * Parse deltatexts. If is not NULL, parse only as far as that * revision. If is NULL, parse everything. */ static void rcs_parse_deltatexts(RCSFILE *rfp, RCSNUM *rev) { int ret; struct rcs_delta *rdp; if ((rfp->rf_flags & PARSED_DELTATEXTS) || (rfp->rf_flags & RCS_CREATE)) return; if (!(rfp->rf_flags & PARSED_DESC)) rcs_parse_desc(rfp, rev); for (;;) { if (rev != NULL) { rdp = rcs_findrev(rfp, rev); if (rdp->rd_text != NULL) break; else ret = rcs_parse_deltatext(rfp); } else ret = rcs_parse_deltatext(rfp); if (ret == 0) { rfp->rf_flags |= PARSED_DELTATEXTS; break; } else if (ret == -1) errx(1, "problem parsing deltatexts"); } } /* rcs_parse_desc() * * Parse RCS description. */ static void rcs_parse_desc(RCSFILE *rfp, RCSNUM *rev) { int ret = 0; if ((rfp->rf_flags & PARSED_DESC) || (rfp->rf_flags & RCS_CREATE)) return; if (!(rfp->rf_flags & PARSED_DELTAS)) rcs_parse_deltas(rfp, rev); /* do parsing */ ret = rcs_gettok(rfp); if (ret != RCS_TOK_DESC) errx(1, "token `%s' found where RCS desc expected", RCS_TOKSTR(rfp)); ret = rcs_gettok(rfp); if (ret != RCS_TOK_STRING) errx(1, "token `%s' found where RCS desc expected", RCS_TOKSTR(rfp)); rfp->rf_desc = xstrdup(RCS_TOKSTR(rfp)); rfp->rf_flags |= PARSED_DESC; } /* * rcs_parse_init() * * Initial parsing of file , which are in the RCS format. * Just does admin section. */ static void rcs_parse_init(RCSFILE *rfp) { struct rcs_pdata *pdp; if (rfp->rf_flags & RCS_PARSED) return; pdp = xcalloc(1, sizeof(*pdp)); pdp->rp_lines = 0; pdp->rp_pttype = RCS_TOK_ERR; if ((pdp->rp_file = fdopen(rfp->rf_fd, "r")) == NULL) err(1, "fdopen: `%s'", rfp->rf_path); pdp->rp_buf = xmalloc((size_t)RCS_BUFSIZE); pdp->rp_blen = RCS_BUFSIZE; pdp->rp_bufend = pdp->rp_buf + pdp->rp_blen - 1; /* ditch the strict lock */ rfp->rf_flags &= ~RCS_SLOCK; rfp->rf_pdata = pdp; if (rcs_parse_admin(rfp) < 0) { rcs_freepdata(pdp); errx(1, "could not parse admin data"); } if (rfp->rf_flags & RCS_PARSE_FULLY) rcs_parse_deltatexts(rfp, NULL); rfp->rf_flags |= RCS_SYNCED; } /* * rcs_parse_admin() * * Parse the administrative portion of an RCS file. * Returns the type of the first token found after the admin section on * success, or -1 on failure. */ static int rcs_parse_admin(RCSFILE *rfp) { u_int i; int tok, ntok, hmask; struct rcs_key *rk; /* hmask is a mask of the headers already encountered */ hmask = 0; for (;;) { tok = rcs_gettok(rfp); if (tok == RCS_TOK_ERR) { rcs_errno = RCS_ERR_PARSE; warnx("parse error in RCS admin section"); goto fail; } else if (tok == RCS_TOK_NUM || tok == RCS_TOK_DESC) { /* * Assume this is the start of the first delta or * that we are dealing with an empty RCS file and * we just found the description. */ rcs_pushtok(rfp, RCS_TOKSTR(rfp), tok); return (tok); } rk = NULL; for (i = 0; i < RCS_NKEYS; i++) if (rcs_keys[i].rk_id == tok) rk = &(rcs_keys[i]); if (hmask & (1 << tok)) { rcs_errno = RCS_ERR_PARSE; warnx("duplicate RCS key"); goto fail; } hmask |= (1 << tok); switch (tok) { case RCS_TOK_HEAD: case RCS_TOK_BRANCH: case RCS_TOK_COMMENT: case RCS_TOK_EXPAND: ntok = rcs_gettok(rfp); if (ntok == RCS_TOK_SCOLON) break; if (ntok != rk->rk_val) { rcs_errno = RCS_ERR_PARSE; warnx("invalid value type for RCS key `%s'", rk->rk_str); } if (tok == RCS_TOK_HEAD) { if (rfp->rf_head == NULL) rfp->rf_head = rcsnum_alloc(); rcsnum_aton(RCS_TOKSTR(rfp), NULL, rfp->rf_head); } else if (tok == RCS_TOK_BRANCH) { if (rfp->rf_branch == NULL) rfp->rf_branch = rcsnum_alloc(); if (rcsnum_aton(RCS_TOKSTR(rfp), NULL, rfp->rf_branch) < 0) goto fail; } else if (tok == RCS_TOK_COMMENT) { rfp->rf_comment = xstrdup(RCS_TOKSTR(rfp)); } else if (tok == RCS_TOK_EXPAND) { rfp->rf_expand = xstrdup(RCS_TOKSTR(rfp)); } /* now get the expected semi-colon */ ntok = rcs_gettok(rfp); if (ntok != RCS_TOK_SCOLON) { rcs_errno = RCS_ERR_PARSE; warnx("missing semi-colon after RCS `%s' key", rk->rk_str); goto fail; } break; case RCS_TOK_ACCESS: if (rcs_parse_access(rfp) < 0) goto fail; break; case RCS_TOK_SYMBOLS: if (rcs_parse_symbols(rfp) < 0) goto fail; break; case RCS_TOK_LOCKS: if (rcs_parse_locks(rfp) < 0) goto fail; break; default: rcs_errno = RCS_ERR_PARSE; warnx("unexpected token `%s' in RCS admin section", RCS_TOKSTR(rfp)); goto fail; } } fail: return (-1); } /* * rcs_parse_delta() * * Parse an RCS delta section and allocate the structure to store that delta's * information in the delta list. * Returns 1 if the section was parsed OK, 0 if it is the last delta, and * -1 on error. */ static int rcs_parse_delta(RCSFILE *rfp) { int ret, tok, ntok, hmask; u_int i; char *tokstr; RCSNUM *datenum; struct rcs_delta *rdp; struct rcs_key *rk; tok = rcs_gettok(rfp); if (tok == RCS_TOK_DESC) { rcs_pushtok(rfp, RCS_TOKSTR(rfp), tok); return (0); } else if (tok != RCS_TOK_NUM) { rcs_errno = RCS_ERR_PARSE; warnx("unexpected token `%s' at start of delta", RCS_TOKSTR(rfp)); return (-1); } rdp = xcalloc(1, sizeof(*rdp)); rdp->rd_num = rcsnum_alloc(); rdp->rd_next = rcsnum_alloc(); TAILQ_INIT(&(rdp->rd_branches)); rcsnum_aton(RCS_TOKSTR(rfp), NULL, rdp->rd_num); hmask = 0; ret = 0; tokstr = NULL; for (;;) { tok = rcs_gettok(rfp); if (tok == RCS_TOK_ERR) { rcs_errno = RCS_ERR_PARSE; warnx("parse error in RCS delta section"); rcs_freedelta(rdp); return (-1); } else if (tok == RCS_TOK_NUM || tok == RCS_TOK_DESC) { rcs_pushtok(rfp, RCS_TOKSTR(rfp), tok); ret = (tok == RCS_TOK_NUM ? 1 : 0); break; } rk = NULL; for (i = 0; i < RCS_NKEYS; i++) if (rcs_keys[i].rk_id == tok) rk = &(rcs_keys[i]); if (hmask & (1 << tok)) { rcs_errno = RCS_ERR_PARSE; warnx("duplicate RCS key"); rcs_freedelta(rdp); return (-1); } hmask |= (1 << tok); switch (tok) { case RCS_TOK_DATE: case RCS_TOK_AUTHOR: case RCS_TOK_STATE: case RCS_TOK_NEXT: case RCS_TOK_COMMITID: ntok = rcs_gettok(rfp); if (ntok == RCS_TOK_SCOLON) { if (rk->rk_flags & RCS_VOPT) break; else { rcs_errno = RCS_ERR_PARSE; warnx("missing mandatory " "value to RCS key `%s'", rk->rk_str); rcs_freedelta(rdp); return (-1); } } if (ntok != rk->rk_val) { rcs_errno = RCS_ERR_PARSE; warnx("invalid value type for RCS key `%s'", rk->rk_str); rcs_freedelta(rdp); return (-1); } if (tokstr != NULL) xfree(tokstr); tokstr = xstrdup(RCS_TOKSTR(rfp)); /* now get the expected semi-colon */ ntok = rcs_gettok(rfp); if (ntok != RCS_TOK_SCOLON) { rcs_errno = RCS_ERR_PARSE; warnx("missing semi-colon after RCS `%s' key", rk->rk_str); xfree(tokstr); rcs_freedelta(rdp); return (-1); } if (tok == RCS_TOK_DATE) { if ((datenum = rcsnum_parse(tokstr)) == NULL) { xfree(tokstr); rcs_freedelta(rdp); return (-1); } if (datenum->rn_len != 6) { rcs_errno = RCS_ERR_PARSE; warnx("RCS date specification has %s " "fields", (datenum->rn_len > 6) ? "too many" : "missing"); xfree(tokstr); rcs_freedelta(rdp); rcsnum_free(datenum); return (-1); } rdp->rd_date.tm_year = datenum->rn_id[0]; if (rdp->rd_date.tm_year >= 1900) rdp->rd_date.tm_year -= 1900; rdp->rd_date.tm_mon = datenum->rn_id[1] - 1; rdp->rd_date.tm_mday = datenum->rn_id[2]; rdp->rd_date.tm_hour = datenum->rn_id[3]; rdp->rd_date.tm_min = datenum->rn_id[4]; rdp->rd_date.tm_sec = datenum->rn_id[5]; rcsnum_free(datenum); } else if (tok == RCS_TOK_AUTHOR) { rdp->rd_author = tokstr; tokstr = NULL; } else if (tok == RCS_TOK_STATE) { rdp->rd_state = tokstr; tokstr = NULL; } else if (tok == RCS_TOK_NEXT) { rcsnum_aton(tokstr, NULL, rdp->rd_next); } else if (tok == RCS_TOK_COMMITID) { /* XXX just parse it, no action yet */ } break; case RCS_TOK_BRANCHES: if (rcs_parse_branches(rfp, rdp) < 0) { rcs_freedelta(rdp); return (-1); } break; default: rcs_errno = RCS_ERR_PARSE; warnx("unexpected token `%s' in RCS delta", RCS_TOKSTR(rfp)); rcs_freedelta(rdp); return (-1); } } if (tokstr != NULL) xfree(tokstr); TAILQ_INSERT_TAIL(&(rfp->rf_delta), rdp, rd_list); rfp->rf_ndelta++; return (ret); } /* * rcs_parse_deltatext() * * Parse an RCS delta text section and fill in the log and text field of the * appropriate delta section. * Returns 1 if the section was parsed OK, 0 if it is the last delta, and * -1 on error. */ static int rcs_parse_deltatext(RCSFILE *rfp) { int tok; RCSNUM *tnum; struct rcs_delta *rdp; tok = rcs_gettok(rfp); if (tok == RCS_TOK_EOF) return (0); if (tok != RCS_TOK_NUM) { rcs_errno = RCS_ERR_PARSE; warnx("unexpected token `%s' at start of RCS delta text", RCS_TOKSTR(rfp)); return (-1); } tnum = rcsnum_alloc(); rcsnum_aton(RCS_TOKSTR(rfp), NULL, tnum); TAILQ_FOREACH(rdp, &(rfp->rf_delta), rd_list) { if (rcsnum_cmp(tnum, rdp->rd_num, 0) == 0) break; } rcsnum_free(tnum); if (rdp == NULL) { warnx("RCS delta text `%s' has no matching delta", RCS_TOKSTR(rfp)); return (-1); } tok = rcs_gettok(rfp); if (tok != RCS_TOK_LOG) { rcs_errno = RCS_ERR_PARSE; warnx("unexpected token `%s' where RCS log expected", RCS_TOKSTR(rfp)); return (-1); } tok = rcs_gettok(rfp); if (tok != RCS_TOK_STRING) { rcs_errno = RCS_ERR_PARSE; warnx("unexpected token `%s' where RCS log expected", RCS_TOKSTR(rfp)); return (-1); } rdp->rd_log = xstrdup(RCS_TOKSTR(rfp)); tok = rcs_gettok(rfp); if (tok != RCS_TOK_TEXT) { rcs_errno = RCS_ERR_PARSE; warnx("unexpected token `%s' where RCS text expected", RCS_TOKSTR(rfp)); return (-1); } tok = rcs_gettok(rfp); if (tok != RCS_TOK_STRING) { rcs_errno = RCS_ERR_PARSE; warnx("unexpected token `%s' where RCS text expected", RCS_TOKSTR(rfp)); return (-1); } if (RCS_TOKLEN(rfp) == 0) { rdp->rd_text = xmalloc(1); rdp->rd_text[0] = '\0'; rdp->rd_tlen = 0; } else { rdp->rd_text = xmalloc(RCS_TOKLEN(rfp)); memcpy(rdp->rd_text, RCS_TOKSTR(rfp), (RCS_TOKLEN(rfp))); rdp->rd_tlen = RCS_TOKLEN(rfp); } return (1); } /* * rcs_parse_access() * * Parse the access list given as value to the `access' keyword. * Returns 0 on success, or -1 on failure. */ static int rcs_parse_access(RCSFILE *rfp) { int type; while ((type = rcs_gettok(rfp)) != RCS_TOK_SCOLON) { if (type != RCS_TOK_ID) { rcs_errno = RCS_ERR_PARSE; warnx("unexpected token `%s' in access list", RCS_TOKSTR(rfp)); return (-1); } if (rcs_access_add(rfp, RCS_TOKSTR(rfp)) < 0) return (-1); } return (0); } /* * rcs_parse_symbols() * * Parse the symbol list given as value to the `symbols' keyword. * Returns 0 on success, or -1 on failure. */ static int rcs_parse_symbols(RCSFILE *rfp) { int type; struct rcs_sym *symp; for (;;) { type = rcs_gettok(rfp); if (type == RCS_TOK_SCOLON) break; if (type != RCS_TOK_ID) { rcs_errno = RCS_ERR_PARSE; warnx("unexpected token `%s' in symbol list", RCS_TOKSTR(rfp)); return (-1); } symp = xmalloc(sizeof(*symp)); symp->rs_name = xstrdup(RCS_TOKSTR(rfp)); symp->rs_num = rcsnum_alloc(); type = rcs_gettok(rfp); if (type != RCS_TOK_COLON) { rcs_errno = RCS_ERR_PARSE; warnx("unexpected token `%s' in symbol list", RCS_TOKSTR(rfp)); rcsnum_free(symp->rs_num); xfree(symp->rs_name); xfree(symp); return (-1); } type = rcs_gettok(rfp); if (type != RCS_TOK_NUM) { rcs_errno = RCS_ERR_PARSE; warnx("unexpected token `%s' in symbol list", RCS_TOKSTR(rfp)); rcsnum_free(symp->rs_num); xfree(symp->rs_name); xfree(symp); return (-1); } if (rcsnum_aton(RCS_TOKSTR(rfp), NULL, symp->rs_num) < 0) { warnx("failed to parse RCS NUM `%s'", RCS_TOKSTR(rfp)); rcsnum_free(symp->rs_num); xfree(symp->rs_name); xfree(symp); return (-1); } TAILQ_INSERT_TAIL(&(rfp->rf_symbols), symp, rs_list); } return (0); } /* * rcs_parse_locks() * * Parse the lock list given as value to the `locks' keyword. * Returns 0 on success, or -1 on failure. */ static int rcs_parse_locks(RCSFILE *rfp) { int type; struct rcs_lock *lkp; for (;;) { type = rcs_gettok(rfp); if (type == RCS_TOK_SCOLON) break; if (type != RCS_TOK_ID) { rcs_errno = RCS_ERR_PARSE; warnx("unexpected token `%s' in lock list", RCS_TOKSTR(rfp)); return (-1); } lkp = xmalloc(sizeof(*lkp)); lkp->rl_name = xstrdup(RCS_TOKSTR(rfp)); lkp->rl_num = rcsnum_alloc(); type = rcs_gettok(rfp); if (type != RCS_TOK_COLON) { rcs_errno = RCS_ERR_PARSE; warnx("unexpected token `%s' in symbol list", RCS_TOKSTR(rfp)); rcsnum_free(lkp->rl_num); xfree(lkp->rl_name); xfree(lkp); return (-1); } type = rcs_gettok(rfp); if (type != RCS_TOK_NUM) { rcs_errno = RCS_ERR_PARSE; warnx("unexpected token `%s' in symbol list", RCS_TOKSTR(rfp)); rcsnum_free(lkp->rl_num); xfree(lkp->rl_name); xfree(lkp); return (-1); } if (rcsnum_aton(RCS_TOKSTR(rfp), NULL, lkp->rl_num) < 0) { warnx("failed to parse RCS NUM `%s'", RCS_TOKSTR(rfp)); rcsnum_free(lkp->rl_num); xfree(lkp->rl_name); xfree(lkp); return (-1); } TAILQ_INSERT_HEAD(&(rfp->rf_locks), lkp, rl_list); } /* check if we have a `strict' */ type = rcs_gettok(rfp); if (type != RCS_TOK_STRICT) { rcs_pushtok(rfp, RCS_TOKSTR(rfp), type); } else { rfp->rf_flags |= RCS_SLOCK; type = rcs_gettok(rfp); if (type != RCS_TOK_SCOLON) { rcs_errno = RCS_ERR_PARSE; warnx("missing semi-colon after `strict' keyword"); return (-1); } } return (0); } /* * rcs_parse_branches() * * Parse the list of branches following a `branches' keyword in a delta. * Returns 0 on success, or -1 on failure. */ static int rcs_parse_branches(RCSFILE *rfp, struct rcs_delta *rdp) { int type; struct rcs_branch *brp; for (;;) { type = rcs_gettok(rfp); if (type == RCS_TOK_SCOLON) break; if (type != RCS_TOK_NUM) { rcs_errno = RCS_ERR_PARSE; warnx("unexpected token `%s' in list of branches", RCS_TOKSTR(rfp)); return (-1); } brp = xmalloc(sizeof(*brp)); brp->rb_num = rcsnum_parse(RCS_TOKSTR(rfp)); if (brp->rb_num == NULL) { xfree(brp); return (-1); } TAILQ_INSERT_TAIL(&(rdp->rd_branches), brp, rb_list); } return (0); } /* * rcs_freedelta() * * Free the contents of a delta structure. */ static void rcs_freedelta(struct rcs_delta *rdp) { struct rcs_branch *rb; if (rdp->rd_num != NULL) rcsnum_free(rdp->rd_num); if (rdp->rd_next != NULL) rcsnum_free(rdp->rd_next); if (rdp->rd_author != NULL) xfree(rdp->rd_author); if (rdp->rd_locker != NULL) xfree(rdp->rd_locker); if (rdp->rd_state != NULL) xfree(rdp->rd_state); if (rdp->rd_log != NULL) xfree(rdp->rd_log); if (rdp->rd_text != NULL) xfree(rdp->rd_text); while ((rb = TAILQ_FIRST(&(rdp->rd_branches))) != NULL) { TAILQ_REMOVE(&(rdp->rd_branches), rb, rb_list); rcsnum_free(rb->rb_num); xfree(rb); } xfree(rdp); } /* * rcs_freepdata() * * Free the contents of the parser data structure. */ static void rcs_freepdata(struct rcs_pdata *pd) { if (pd->rp_file != NULL) (void)fclose(pd->rp_file); if (pd->rp_buf != NULL) xfree(pd->rp_buf); xfree(pd); } /* * rcs_gettok() * * Get the next RCS token from the string . */ static int rcs_gettok(RCSFILE *rfp) { u_int i; int ch, last, type; size_t len; char *bp; struct rcs_pdata *pdp = (struct rcs_pdata *)rfp->rf_pdata; type = RCS_TOK_ERR; bp = pdp->rp_buf; pdp->rp_tlen = 0; *bp = '\0'; if (pdp->rp_pttype != RCS_TOK_ERR) { type = pdp->rp_pttype; if (strlcpy(pdp->rp_buf, pdp->rp_ptok, pdp->rp_blen) >= pdp->rp_blen) errx(1, "rcs_gettok: strlcpy"); pdp->rp_pttype = RCS_TOK_ERR; return (type); } /* skip leading whitespace */ /* XXX we must skip backspace too for compatibility, should we? */ do { ch = getc(pdp->rp_file); if (ch == '\n') pdp->rp_lines++; } while (isspace(ch)); if (ch == EOF) { type = RCS_TOK_EOF; } else if (ch == ';') { type = RCS_TOK_SCOLON; } else if (ch == ':') { type = RCS_TOK_COLON; } else if (isalpha(ch) || ch == '_' || ch == '$' || ch == '.' || ch == '-') { type = RCS_TOK_ID; *(bp++) = ch; for (;;) { ch = getc(pdp->rp_file); if (ch == EOF) { type = RCS_TOK_EOF; break; } else if (!isalnum(ch) && ch != '_' && ch != '-' && ch != '/' && ch != '.' && ch != '$') { ungetc(ch, pdp->rp_file); break; } *(bp++) = ch; pdp->rp_tlen++; if (bp == pdp->rp_bufend - 1) { len = bp - pdp->rp_buf; rcs_growbuf(rfp); bp = pdp->rp_buf + len; } } *bp = '\0'; if (type != RCS_TOK_ERR) { for (i = 0; i < RCS_NKEYS; i++) { if (strcmp(rcs_keys[i].rk_str, pdp->rp_buf) == 0) { type = rcs_keys[i].rk_id; break; } } } } else if (ch == '@') { /* we have a string */ type = RCS_TOK_STRING; for (;;) { ch = getc(pdp->rp_file); if (ch == EOF) { type = RCS_TOK_EOF; break; } else if (ch == '@') { ch = getc(pdp->rp_file); if (ch != '@') { ungetc(ch, pdp->rp_file); break; } } else if (ch == '\n') pdp->rp_lines++; *(bp++) = ch; pdp->rp_tlen++; if (bp == pdp->rp_bufend - 1) { len = bp - pdp->rp_buf; rcs_growbuf(rfp); bp = pdp->rp_buf + len; } } *bp = '\0'; } else if (isdigit(ch)) { *(bp++) = ch; last = ch; type = RCS_TOK_NUM; for (;;) { ch = getc(pdp->rp_file); if (ch == EOF) { type = RCS_TOK_EOF; break; } if (bp == pdp->rp_bufend) break; if (isalpha(ch) && ch != '.') { type = RCS_TOK_ID; } else if (!isdigit(ch) && ch != '.') { ungetc(ch, pdp->rp_file); break; } if (last == '.' && ch == '.') { type = RCS_TOK_ERR; break; } last = ch; *(bp++) = ch; pdp->rp_tlen++; } *bp = '\0'; } return (type); } /* * rcs_pushtok() * * Push a token back in the parser's token buffer. */ static int rcs_pushtok(RCSFILE *rfp, const char *tok, int type) { struct rcs_pdata *pdp = (struct rcs_pdata *)rfp->rf_pdata; if (pdp->rp_pttype != RCS_TOK_ERR) return (-1); pdp->rp_pttype = type; if (strlcpy(pdp->rp_ptok, tok, sizeof(pdp->rp_ptok)) >= sizeof(pdp->rp_ptok)) errx(1, "rcs_pushtok: strlcpy"); return (0); } /* * rcs_growbuf() * * Attempt to grow the internal parse buffer for the RCS file by * RCS_BUFEXTSIZE. * In case of failure, the original buffer is left unmodified. */ static void rcs_growbuf(RCSFILE *rf) { struct rcs_pdata *pdp = (struct rcs_pdata *)rf->rf_pdata; pdp->rp_buf = xrealloc(pdp->rp_buf, 1, pdp->rp_blen + RCS_BUFEXTSIZE); pdp->rp_blen += RCS_BUFEXTSIZE; pdp->rp_bufend = pdp->rp_buf + pdp->rp_blen - 1; } /* * rcs_strprint() * * Output an RCS string of size to the stream . Any * '@' characters are escaped. Otherwise, the string can contain arbitrary * binary data. */ static void rcs_strprint(const u_char *str, size_t slen, FILE *stream) { const u_char *ap, *ep, *sp; if (slen == 0) return; ep = str + slen - 1; for (sp = str; sp <= ep;) { ap = memchr(sp, '@', ep - sp); if (ap == NULL) ap = ep; (void)fwrite(sp, sizeof(u_char), ap - sp + 1, stream); if (*ap == '@') putc('@', stream); sp = ap + 1; } } /* * rcs_expand_keywords() * * Return expansion any RCS keywords in * * On error, return NULL. */ static BUF * rcs_expand_keywords(char *rcsfile, struct rcs_delta *rdp, BUF *bp, int mode) { BUF *newbuf; int kwtype; u_int j, found; u_char *c, *kwstr, *start, *end, *fin; char expbuf[256], buf[256]; struct tm tb; char *fmt; size_t len; kwtype = 0; kwstr = NULL; /* * -z support for RCS */ tb = rdp->rd_date; if (timezone_flag != NULL) rcs_set_tz(timezone_flag, rdp, &tb); len = rcs_buf_len(bp); c = rcs_buf_get(bp); found = 0; /* Final character in buffer. */ fin = c + len - 1; /* If no keywords are found, return original buffer. */ newbuf = bp; /* * Keyword formats: * $Keyword$ * $Keyword: value$ */ for (; c < fin; c++) { if (*c == '$') { BUF *tmpbuf; size_t clen; /* remember start of this possible keyword */ start = c; /* first following character has to be alphanumeric */ c++; if (!isalpha(*c)) { c = start; continue; } /* Number of characters between c and fin, inclusive. */ clen = fin - c + 1; /* look for any matching keywords */ found = 0; for (j = 0; j < RCS_NKWORDS; j++) { size_t kwlen; kwlen = strlen(rcs_expkw[j].kw_str); /* * kwlen must be less than clen since clen * includes either a terminating `$' or a `:'. */ if (kwlen < clen && memcmp(c, rcs_expkw[j].kw_str, kwlen) == 0 && (c[kwlen] == '$' || c[kwlen] == ':')) { found = 1; kwstr = rcs_expkw[j].kw_str; kwtype = rcs_expkw[j].kw_type; c += kwlen; break; } } /* unknown keyword, continue looking */ if (found == 0) { c = start; continue; } /* * if the next character was ':' we need to look for * an '$' before the end of the line to be sure it is * in fact a keyword. */ if (*c == ':') { for (; c <= fin; ++c) { if (*c == '$' || *c == '\n') break; } if (*c != '$') { c = start; continue; } } end = c + 1; /* start constructing the expansion */ expbuf[0] = '\0'; if (mode & RCS_KWEXP_NAME) { char *tmp; (void)xasprintf(&tmp, "$%s%s", kwstr, (mode & RCS_KWEXP_VAL) ? ": " : ""); if (strlcat(expbuf, tmp, sizeof(expbuf)) >= sizeof(expbuf)) errx(1, "rcs_expand_keywords: string truncated"); xfree(tmp); } /* * order matters because of RCS_KW_ID and * RCS_KW_HEADER here */ if (mode & RCS_KWEXP_VAL) { if (kwtype & RCS_KW_RCSFILE) { char *tmp; (void)xasprintf(&tmp, "%s ", (kwtype & RCS_KW_FULLPATH) ? rcsfile : basename(rcsfile)); if (strlcat(expbuf, tmp, sizeof(expbuf)) >= sizeof(expbuf)) errx(1, "rcs_expand_keywords: string truncated"); xfree(tmp); } if (kwtype & RCS_KW_REVISION) { char *tmp; rcsnum_tostr(rdp->rd_num, buf, sizeof(buf)); (void)xasprintf(&tmp, "%s ", buf); if (strlcat(expbuf, tmp, sizeof(expbuf)) >= sizeof(buf)) errx(1, "rcs_expand_keywords: string truncated"); xfree(tmp); } if (kwtype & RCS_KW_DATE) { if (timezone_flag != NULL) fmt = "%Y/%m/%d %H:%M:%S%z "; else fmt = "%Y/%m/%d %H:%M:%S "; strftime(buf, sizeof(buf), fmt, &tb); if (strlcat(expbuf, buf, sizeof(expbuf)) >= sizeof(expbuf)) errx(1, "rcs_expand_keywords: string truncated"); } if (kwtype & RCS_KW_AUTHOR) { char *tmp; (void)xasprintf(&tmp, "%s ", rdp->rd_author); if (strlcat(expbuf, tmp, sizeof(expbuf)) >= sizeof(expbuf)) errx(1, "rcs_expand_keywords: string truncated"); xfree(tmp); } if (kwtype & RCS_KW_STATE) { char *tmp; (void)xasprintf(&tmp, "%s ", rdp->rd_state); if (strlcat(expbuf, tmp, sizeof(expbuf)) >= sizeof(expbuf)) errx(1, "rcs_expand_keywords: string truncated"); xfree(tmp); } /* order does not matter anymore below */ if (kwtype & RCS_KW_LOG) if (strlcat(expbuf, " ", sizeof(expbuf)) >= sizeof(expbuf)) errx(1, "rcs_expand_keywords: string truncated"); if (kwtype & RCS_KW_SOURCE) { char *tmp; (void)xasprintf(&tmp, "%s ", rcsfile); if (strlcat(expbuf, tmp, sizeof(expbuf)) >= sizeof(expbuf)) errx(1, "rcs_expand_keywords: string truncated"); xfree(tmp); } if (kwtype & RCS_KW_NAME) if (strlcat(expbuf, " ", sizeof(expbuf)) >= sizeof(expbuf)) errx(1, "rcs_expand_keywords: string truncated"); } /* end the expansion */ if (mode & RCS_KWEXP_NAME) if (strlcat(expbuf, "$", sizeof(expbuf)) >= sizeof(expbuf)) errx(1, "rcs_expand_keywords: string truncated"); /* Concatenate everything together. */ tmpbuf = rcs_buf_alloc(len + strlen(expbuf), BUF_AUTOEXT); /* Append everything before keyword. */ rcs_buf_append(tmpbuf, rcs_buf_get(newbuf), start - (unsigned char *)rcs_buf_get(newbuf)); /* Append keyword. */ rcs_buf_append(tmpbuf, expbuf, strlen(expbuf)); /* Point c to end of keyword. */ c = rcs_buf_get(tmpbuf) + rcs_buf_len(tmpbuf) - 1; /* Append everything after keyword. */ rcs_buf_append(tmpbuf, end, ((unsigned char *)rcs_buf_get(newbuf) + rcs_buf_len(newbuf)) - end); /* Point fin to end of data. */ fin = rcs_buf_get(tmpbuf) + rcs_buf_len(tmpbuf) - 1; /* Recalculate new length. */ len = rcs_buf_len(tmpbuf); /* tmpbuf is now ready, free old newbuf if allocated here. */ if (newbuf != bp) rcs_buf_free(newbuf); newbuf = tmpbuf; } } return (newbuf); } /* * rcs_deltatext_set() * * Set deltatext for in RCS file to * Returns -1 on error, 0 on success. */ int rcs_deltatext_set(RCSFILE *rfp, RCSNUM *rev, BUF *bp) { size_t len; u_char *dtext; struct rcs_delta *rdp; /* Write operations require full parsing */ rcs_parse_deltatexts(rfp, NULL); if ((rdp = rcs_findrev(rfp, rev)) == NULL) return (-1); if (rdp->rd_text != NULL) xfree(rdp->rd_text); len = rcs_buf_len(bp); dtext = rcs_buf_release(bp); bp = NULL; if (len != 0) { rdp->rd_text = xmalloc(len); rdp->rd_tlen = len; (void)memcpy(rdp->rd_text, dtext, len); xfree(dtext); } else { rdp->rd_text = NULL; rdp->rd_tlen = 0; } return (0); } /* * rcs_rev_setlog() * * Sets the log message of revision to */ int rcs_rev_setlog(RCSFILE *rfp, RCSNUM *rev, const char *logtext) { struct rcs_delta *rdp; char buf[RCS_REV_BUFSZ]; rcsnum_tostr(rev, buf, sizeof(buf)); if ((rdp = rcs_findrev(rfp, rev)) == NULL) return (-1); if (rdp->rd_log != NULL) xfree(rdp->rd_log); rdp->rd_log = xstrdup(logtext); rfp->rf_flags &= ~RCS_SYNCED; return (0); } /* * rcs_rev_getdate() * * Get the date corresponding to a given revision. * Returns the date on success, -1 on failure. */ time_t rcs_rev_getdate(RCSFILE *rfp, RCSNUM *rev) { struct rcs_delta *rdp; if ((rdp = rcs_findrev(rfp, rev)) == NULL) return (-1); return (mktime(&rdp->rd_date)); } /* * rcs_state_set() * * Sets the state of revision to * NOTE: default state is 'Exp'. States may not contain spaces. * * Returns -1 on failure, 0 on success. */ int rcs_state_set(RCSFILE *rfp, RCSNUM *rev, const char *state) { struct rcs_delta *rdp; if ((rdp = rcs_findrev(rfp, rev)) == NULL) return (-1); if (rdp->rd_state != NULL) xfree(rdp->rd_state); rdp->rd_state = xstrdup(state); rfp->rf_flags &= ~RCS_SYNCED; return (0); } /* * rcs_state_check() * * Check if string is valid. * * Returns 0 if the string is valid, -1 otherwise. */ int rcs_state_check(const char *state) { if (strchr(state, ' ') != NULL) return (-1); return (0); } /* * rcs_state_get() * * Get the state for a given revision of a specified RCSFILE. * * Returns NULL on failure. */ const char * rcs_state_get(RCSFILE *rfp, RCSNUM *rev) { struct rcs_delta *rdp; if ((rdp = rcs_findrev(rfp, rev)) == NULL) return (NULL); return (rdp->rd_state); } /* * rcs_kwexp_buf() * * Do keyword expansion on a buffer if necessary * */ BUF * rcs_kwexp_buf(BUF *bp, RCSFILE *rf, RCSNUM *rev) { struct rcs_delta *rdp; int expmode; /* * Do keyword expansion if required. */ if (rf->rf_expand != NULL) expmode = rcs_kwexp_get(rf); else expmode = RCS_KWEXP_DEFAULT; if (!(expmode & RCS_KWEXP_NONE)) { if ((rdp = rcs_findrev(rf, rev)) == NULL) errx(1, "could not fetch revision"); return (rcs_expand_keywords(rf->rf_path, rdp, bp, expmode)); } return (bp); }