Annotation of src/usr.bin/cvs/file.c, Revision 1.1
1.1 ! jfb 1: /* $OpenBSD$ */
! 2: /*
! 3: * Copyright (c) 2004 Jean-Francois Brousseau <jfb@openbsd.org>
! 4: * All rights reserved.
! 5: *
! 6: * Redistribution and use in source and binary forms, with or without
! 7: * modification, are permitted provided that the following conditions
! 8: * are met:
! 9: *
! 10: * 1. Redistributions of source code must retain the above copyright
! 11: * notice, this list of conditions and the following disclaimer.
! 12: * 2. The name of the author may not be used to endorse or promote products
! 13: * derived from this software without specific prior written permission.
! 14: *
! 15: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
! 16: * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
! 17: * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
! 18: * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
! 19: * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
! 20: * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
! 21: * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
! 22: * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
! 23: * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
! 24: * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
! 25: */
! 26:
! 27: #include <sys/types.h>
! 28: #include <sys/queue.h>
! 29: #include <sys/stat.h>
! 30:
! 31: #include <pwd.h>
! 32: #include <errno.h>
! 33: #include <stdio.h>
! 34: #include <fcntl.h>
! 35: #include <dirent.h>
! 36: #include <stdlib.h>
! 37: #include <unistd.h>
! 38: #include <string.h>
! 39: #include <fnmatch.h>
! 40:
! 41: #include "cvs.h"
! 42: #include "log.h"
! 43:
! 44:
! 45: #define CVS_IGN_STATIC 0x01 /* pattern is static, no need to glob */
! 46:
! 47:
! 48:
! 49: #define CVS_CHAR_ISMETA(c) ((c == '*') || (c == '?') || (c == '['))
! 50:
! 51:
! 52:
! 53: /* ignore pattern */
! 54: struct cvs_ignpat {
! 55: char ip_pat[MAXNAMLEN];
! 56: int ip_flags;
! 57: TAILQ_ENTRY (cvs_ignpat) ip_list;
! 58: };
! 59:
! 60:
! 61: /*
! 62: * Standard patterns to ignore.
! 63: */
! 64:
! 65: static const char *cvs_ign_std[] = {
! 66: ".",
! 67: "..",
! 68: "*.o",
! 69: "*.so",
! 70: "*.bak",
! 71: "*.orig",
! 72: "*.rej",
! 73: "*.exe",
! 74: "*.depend",
! 75: "CVS",
! 76: "core",
! 77: #ifdef OLD_SMELLY_CRUFT
! 78: "RCSLOG",
! 79: "tags",
! 80: "TAGS",
! 81: "RCS",
! 82: "SCCS",
! 83: "#*",
! 84: ".#*",
! 85: ",*",
! 86: #endif
! 87: };
! 88:
! 89:
! 90: TAILQ_HEAD(, cvs_ignpat) cvs_ign_pats;
! 91:
! 92:
! 93: /*
! 94: * cvs_file_init()
! 95: *
! 96: */
! 97:
! 98: int
! 99: cvs_file_init(void)
! 100: {
! 101: int i;
! 102: size_t len;
! 103: char path[MAXPATHLEN], buf[MAXNAMLEN];
! 104: FILE *ifp;
! 105: struct passwd *pwd;
! 106:
! 107: TAILQ_INIT(&cvs_ign_pats);
! 108:
! 109: /* standard patterns to ignore */
! 110: for (i = 0; i < sizeof(cvs_ign_std)/sizeof(char *); i++)
! 111: cvs_file_ignore(cvs_ign_std[i]);
! 112:
! 113: /* read the cvsignore file in the user's home directory, if any */
! 114: pwd = getpwuid(getuid());
! 115: if (pwd != NULL) {
! 116: snprintf(path, sizeof(path), "%s/.cvsignore", pwd->pw_dir);
! 117: ifp = fopen(path, "r");
! 118: if (ifp == NULL) {
! 119: if (errno != ENOENT)
! 120: cvs_log(LP_ERRNO, "failed to open `%s'", path);
! 121: }
! 122: else {
! 123: while (fgets(buf, sizeof(buf), ifp) != NULL) {
! 124: len = strlen(buf);
! 125: if (len == 0)
! 126: continue;
! 127: if (buf[len - 1] != '\n') {
! 128: cvs_log(LP_ERR, "line too long in `%s'",
! 129: path);
! 130: }
! 131: buf[--len] = '\0';
! 132: cvs_file_ignore(buf);
! 133: }
! 134: (void)fclose(ifp);
! 135: }
! 136: }
! 137:
! 138: return (0);
! 139: }
! 140:
! 141:
! 142: /*
! 143: * cvs_file_ignore()
! 144: *
! 145: * Add the pattern <pat> to the list of patterns for files to ignore.
! 146: * Returns 0 on success, or -1 on failure.
! 147: */
! 148:
! 149: int
! 150: cvs_file_ignore(const char *pat)
! 151: {
! 152: char *cp;
! 153: struct cvs_ignpat *ip;
! 154:
! 155: ip = (struct cvs_ignpat *)malloc(sizeof(*ip));
! 156: if (ip == NULL) {
! 157: cvs_log(LP_ERR, "failed to allocate space for ignore pattern");
! 158: return (-1);
! 159: }
! 160:
! 161: strlcpy(ip->ip_pat, pat, sizeof(ip->ip_pat));
! 162:
! 163: /* check if we will need globbing for that pattern */
! 164: ip->ip_flags = CVS_IGN_STATIC;
! 165: for (cp = ip->ip_pat; *cp != '\0'; cp++) {
! 166: if (CVS_CHAR_ISMETA(*cp)) {
! 167: ip->ip_flags &= ~CVS_IGN_STATIC;
! 168: break;
! 169: }
! 170: }
! 171:
! 172: TAILQ_INSERT_TAIL(&cvs_ign_pats, ip, ip_list);
! 173:
! 174: return (0);
! 175: }
! 176:
! 177:
! 178: /*
! 179: * cvs_file_isignored()
! 180: *
! 181: * Returns 1 if the filename <file> is matched by one of the ignore
! 182: * patterns, or 0 otherwise.
! 183: */
! 184:
! 185: int
! 186: cvs_file_isignored(const char *file)
! 187: {
! 188: struct cvs_ignpat *ip;
! 189:
! 190: TAILQ_FOREACH(ip, &cvs_ign_pats, ip_list) {
! 191: if (ip->ip_flags & CVS_IGN_STATIC) {
! 192: if (strcmp(file, ip->ip_pat) == 0)
! 193: return (1);
! 194: }
! 195: else if (fnmatch(ip->ip_pat, file, FNM_PERIOD) == 0)
! 196: return (1);
! 197: }
! 198:
! 199: return (0);
! 200: }
! 201:
! 202:
! 203: /*
! 204: * cvs_file_getv()
! 205: *
! 206: * Get a vector of all the files found in the directory <dir> and not
! 207: * matching any of the ignore patterns. The number of files found is
! 208: * returned in <nfiles>.
! 209: * Returns a pointer to a dynamically-allocated string vector on success,
! 210: * or NULL on failure.
! 211: */
! 212:
! 213: char**
! 214: cvs_file_getv(const char *dir, int *nfiles)
! 215: {
! 216: int nf, ret, fd;
! 217: long base;
! 218: void *dp, *ep, *tmp;
! 219: char fbuf[1024], **fvec;
! 220: struct dirent *ent;
! 221:
! 222: *nfiles = 0;
! 223: fvec = NULL;
! 224:
! 225: fd = open(dir, O_RDONLY);
! 226: if (fd == -1) {
! 227: cvs_log(LP_ERRNO, "failed to open `%s'", dir);
! 228: return (NULL);
! 229: }
! 230: ret = getdirentries(fd, fbuf, sizeof(fbuf), &base);
! 231: if (ret == -1) {
! 232: cvs_log(LP_ERRNO, "failed to get directory entries");
! 233: (void)close(fd);
! 234: return (NULL);
! 235: }
! 236:
! 237: dp = fbuf;
! 238: ep = fbuf + (size_t)ret;
! 239: while (dp < ep) {
! 240: ent = (struct dirent *)dp;
! 241: dp += ent->d_reclen;
! 242:
! 243: if (cvs_file_isignored(ent->d_name))
! 244: continue;
! 245:
! 246: tmp = realloc(fvec, (*nfiles + 1) * sizeof(char *));
! 247: if (tmp == NULL) {
! 248: cvs_log(LP_ERRNO, "failed to reallocate file vector");
! 249: (void)close(fd);
! 250: free(fvec);
! 251: return (NULL);
! 252: }
! 253: fvec[++(*nfiles)] = strdup(ent->d_name);
! 254:
! 255: *nfiles++;
! 256: }
! 257:
! 258: (void)close(fd);
! 259:
! 260: return (fvec);
! 261: }
! 262:
! 263:
! 264: /*
! 265: * cvs_file_freev()
! 266: *
! 267: * Free a file vector obtained with cvs_file_getv().
! 268: */
! 269:
! 270: void
! 271: cvs_file_freev(char **fvec, int nfiles)
! 272: {
! 273: int i;
! 274:
! 275: for (i = 0; i < nfiles; i++)
! 276: free(fvec[i]);
! 277: free(fvec);
! 278: }
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