vlm | 2248d71 | 2004-08-19 13:29:18 +0000 | [diff] [blame] | 1 | #include "asn1c_internal.h" |
vlm | 8a09e0f | 2005-02-25 14:20:30 +0000 | [diff] [blame^] | 2 | #include "asn1c_compat.h" |
vlm | 1f1d8cb | 2004-08-13 16:58:19 +0000 | [diff] [blame] | 3 | |
| 4 | #ifndef MAXPATHLEN |
| 5 | #define MAXPATHLEN 1024 |
| 6 | #endif |
| 7 | |
vlm | 2248d71 | 2004-08-19 13:29:18 +0000 | [diff] [blame] | 8 | #ifndef DEFFILEMODE /* Normally in <sys/stat.h> */ |
vlm | 8a09e0f | 2005-02-25 14:20:30 +0000 | [diff] [blame^] | 9 | #ifdef WIN32 |
| 10 | #define DEFFILEMODE 0 |
| 11 | #else |
vlm | 2248d71 | 2004-08-19 13:29:18 +0000 | [diff] [blame] | 12 | #define DEFFILEMODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH) |
| 13 | #endif |
vlm | 8a09e0f | 2005-02-25 14:20:30 +0000 | [diff] [blame^] | 14 | #endif |
vlm | 2248d71 | 2004-08-19 13:29:18 +0000 | [diff] [blame] | 15 | |
| 16 | FILE * |
| 17 | asn1c_open_file(const char *name, const char *ext) { |
| 18 | int created = 1; |
vlm | 8a09e0f | 2005-02-25 14:20:30 +0000 | [diff] [blame^] | 19 | #ifndef WIN32 |
vlm | 2248d71 | 2004-08-19 13:29:18 +0000 | [diff] [blame] | 20 | struct stat sb; |
vlm | 8a09e0f | 2005-02-25 14:20:30 +0000 | [diff] [blame^] | 21 | #endif |
vlm | 2248d71 | 2004-08-19 13:29:18 +0000 | [diff] [blame] | 22 | char *fname; |
vlm | 8a09e0f | 2005-02-25 14:20:30 +0000 | [diff] [blame^] | 23 | size_t len; |
vlm | 2248d71 | 2004-08-19 13:29:18 +0000 | [diff] [blame] | 24 | FILE *fp; |
| 25 | int fd; |
| 26 | |
| 27 | /* |
| 28 | * Compute filenames. |
| 29 | */ |
| 30 | len = strlen(name) + strlen(ext) + 1; |
| 31 | fname = alloca(len); |
| 32 | snprintf(fname, len, "%s%s", name, ext); |
| 33 | |
| 34 | /* |
| 35 | * Create files. |
| 36 | */ |
| 37 | fd = open(fname, O_CREAT | O_EXCL | O_WRONLY, DEFFILEMODE); |
| 38 | if(fd == -1 && errno == EEXIST) { |
| 39 | fd = open(fname, O_WRONLY, DEFFILEMODE); |
| 40 | created = 0; |
| 41 | } |
| 42 | if(fd == -1) { |
| 43 | perror(fname); |
| 44 | return NULL; |
| 45 | } |
| 46 | |
vlm | 8a09e0f | 2005-02-25 14:20:30 +0000 | [diff] [blame^] | 47 | #ifndef WIN32 |
vlm | 2248d71 | 2004-08-19 13:29:18 +0000 | [diff] [blame] | 48 | /* |
| 49 | * Check sanity. |
| 50 | */ |
| 51 | if(fstat(fd, &sb) || !S_ISREG(sb.st_mode)) { |
| 52 | fprintf(stderr, "%s: Not a regular file\n", fname); |
| 53 | if(created) unlink(fname); |
| 54 | close(fd); |
| 55 | return NULL; |
| 56 | } |
| 57 | |
| 58 | (void)ftruncate(fd, 0); |
vlm | 8a09e0f | 2005-02-25 14:20:30 +0000 | [diff] [blame^] | 59 | #else |
| 60 | _chsize(fd, 0); |
| 61 | #endif /* WIN32 */ |
vlm | 2248d71 | 2004-08-19 13:29:18 +0000 | [diff] [blame] | 62 | |
| 63 | /* |
| 64 | * Convert file descriptor into file pointer. |
| 65 | */ |
| 66 | fp = fdopen(fd, "w"); |
| 67 | if(fp == NULL) { |
| 68 | if(created) unlink(fname); |
| 69 | close(fd); |
| 70 | } |
| 71 | return fp; |
| 72 | } |
| 73 | |
| 74 | |
vlm | 1f1d8cb | 2004-08-13 16:58:19 +0000 | [diff] [blame] | 75 | char * |
| 76 | a1c_basename(const char *path) { |
| 77 | static char strbuf[MAXPATHLEN]; |
| 78 | const char *pend; |
| 79 | const char *name; |
| 80 | |
| 81 | pend = path + strlen(path); |
| 82 | if(pend == path) { |
| 83 | strcpy(strbuf, "."); |
| 84 | return strbuf; |
| 85 | } |
| 86 | |
| 87 | /* Skip tailing slashes */ |
| 88 | for(pend--; pend > path && *pend == '/'; pend--); |
| 89 | |
| 90 | if(pend == path && *path == '/') { |
| 91 | strcpy(strbuf, "/"); |
| 92 | return strbuf; |
| 93 | } |
| 94 | |
| 95 | for(name = pend; name > path && name[-1] != '/'; name--); |
| 96 | |
vlm | 2248d71 | 2004-08-19 13:29:18 +0000 | [diff] [blame] | 97 | if((pend - name) >= (int)sizeof(strbuf) - 1) { |
vlm | 1f1d8cb | 2004-08-13 16:58:19 +0000 | [diff] [blame] | 98 | errno = ENAMETOOLONG; |
| 99 | return 0; |
| 100 | } |
| 101 | |
| 102 | memcpy(strbuf, name, pend - name + 1); |
| 103 | strbuf[pend - name + 1] = '\0'; |
| 104 | |
| 105 | return strbuf; |
| 106 | } |
| 107 | |
| 108 | |
| 109 | char * |
| 110 | a1c_dirname(const char *path) { |
| 111 | static char strbuf[MAXPATHLEN]; |
| 112 | const char *pend; |
| 113 | const char *last = 0; |
| 114 | int in_slash = 0; |
| 115 | |
| 116 | /* One-pass determination of the last char of the pathname */ |
| 117 | for(pend = path; ; pend++) { |
vlm | 1f1d8cb | 2004-08-13 16:58:19 +0000 | [diff] [blame] | 118 | switch(*pend) { |
| 119 | case '\0': break; |
| 120 | case '/': |
| 121 | if(!in_slash) { |
| 122 | last = pend; |
| 123 | in_slash = 1; |
| 124 | } |
| 125 | continue; |
| 126 | default: |
| 127 | if(in_slash) in_slash = 0; |
| 128 | continue; |
| 129 | } |
| 130 | break; |
| 131 | } |
vlm | 1f1d8cb | 2004-08-13 16:58:19 +0000 | [diff] [blame] | 132 | |
| 133 | if(last <= path) { |
| 134 | strcpy(strbuf, *path == '/' ? "/" : "."); |
| 135 | return strbuf; |
| 136 | } |
| 137 | |
| 138 | if(!last) { |
| 139 | strcpy(strbuf, "/"); |
| 140 | return strbuf; |
| 141 | } |
| 142 | |
vlm | 2248d71 | 2004-08-19 13:29:18 +0000 | [diff] [blame] | 143 | if((last - path) >= (int)sizeof(strbuf)) { |
vlm | 1f1d8cb | 2004-08-13 16:58:19 +0000 | [diff] [blame] | 144 | errno = ENAMETOOLONG; |
| 145 | return 0; |
| 146 | } |
| 147 | |
| 148 | memcpy(strbuf, path, last - path); |
| 149 | strbuf[last - path] = '\0'; |
| 150 | |
| 151 | return strbuf; |
| 152 | } |
| 153 | |