| 1 | /* (C) 1998 Red Hat Software, Inc. -- Licensing details are in the COPYING |
| 2 | file accompanying popt source distributions, available from |
| 3 | ftp://ftp.redhat.com/pub/code/popt */ |
| 4 | |
| 5 | #include "system.h" |
| 6 | #include "poptint.h" |
| 7 | |
| 8 | static void configLine(poptContext con, char * line) { |
| 9 | int nameLength = strlen(con->appName); |
| 10 | char * opt; |
| 11 | struct poptAlias alias; |
| 12 | char * entryType; |
| 13 | char * longName = NULL; |
| 14 | char shortName = '\0'; |
| 15 | |
| 16 | if (strncmp(line, con->appName, nameLength)) return; |
| 17 | line += nameLength; |
| 18 | if (!*line || !isspace(*line)) return; |
| 19 | while (*line && isspace(*line)) line++; |
| 20 | entryType = line; |
| 21 | |
| 22 | while (!*line || !isspace(*line)) line++; |
| 23 | *line++ = '\0'; |
| 24 | while (*line && isspace(*line)) line++; |
| 25 | if (!*line) return; |
| 26 | opt = line; |
| 27 | |
| 28 | while (!*line || !isspace(*line)) line++; |
| 29 | *line++ = '\0'; |
| 30 | while (*line && isspace(*line)) line++; |
| 31 | if (!*line) return; |
| 32 | |
| 33 | if (opt[0] == '-' && opt[1] == '-') |
| 34 | longName = opt + 2; |
| 35 | else if (opt[0] == '-' && !opt[2]) |
| 36 | shortName = opt[1]; |
| 37 | |
| 38 | if (!strcmp(entryType, "alias")) { |
| 39 | if (poptParseArgvString(line, &alias.argc, &alias.argv)) return; |
| 40 | alias.longName = longName, alias.shortName = shortName; |
| 41 | poptAddAlias(con, alias, 0); |
| 42 | } else if (!strcmp(entryType, "exec")) { |
| 43 | con->execs = realloc(con->execs, |
| 44 | sizeof(*con->execs) * (con->numExecs + 1)); |
| 45 | if (longName) |
| 46 | con->execs[con->numExecs].longName = xstrdup(longName); |
| 47 | else |
| 48 | con->execs[con->numExecs].longName = NULL; |
| 49 | |
| 50 | con->execs[con->numExecs].shortName = shortName; |
| 51 | con->execs[con->numExecs].script = xstrdup(line); |
| 52 | |
| 53 | con->numExecs++; |
| 54 | } |
| 55 | } |
| 56 | |
| 57 | int poptReadConfigFile(poptContext con, const char * fn) { |
| 58 | char * file, * chptr, * end; |
| 59 | char * buf, * dst; |
| 60 | int fd, rc; |
| 61 | int fileLength; |
| 62 | |
| 63 | fd = open(fn, O_RDONLY); |
| 64 | if (fd < 0) { |
| 65 | if (errno == ENOENT) |
| 66 | return 0; |
| 67 | else |
| 68 | return POPT_ERROR_ERRNO; |
| 69 | } |
| 70 | |
| 71 | fileLength = lseek(fd, 0, SEEK_END); |
| 72 | (void) lseek(fd, 0, 0); |
| 73 | |
| 74 | file = alloca(fileLength + 1); |
| 75 | if (read(fd, file, fileLength) != fileLength) { |
| 76 | rc = errno; |
| 77 | close(fd); |
| 78 | errno = rc; |
| 79 | return POPT_ERROR_ERRNO; |
| 80 | } |
| 81 | close(fd); |
| 82 | |
| 83 | dst = buf = alloca(fileLength + 1); |
| 84 | |
| 85 | chptr = file; |
| 86 | end = (file + fileLength); |
| 87 | while (chptr < end) { |
| 88 | switch (*chptr) { |
| 89 | case '\n': |
| 90 | *dst = '\0'; |
| 91 | dst = buf; |
| 92 | while (*dst && isspace(*dst)) dst++; |
| 93 | if (*dst && *dst != '#') { |
| 94 | configLine(con, dst); |
| 95 | } |
| 96 | chptr++; |
| 97 | break; |
| 98 | case '\\': |
| 99 | *dst++ = *chptr++; |
| 100 | if (chptr < end) { |
| 101 | if (*chptr == '\n') |
| 102 | dst--, chptr++; |
| 103 | /* \ at the end of a line does not insert a \n */ |
| 104 | else |
| 105 | *dst++ = *chptr++; |
| 106 | } |
| 107 | break; |
| 108 | default: |
| 109 | *dst++ = *chptr++; |
| 110 | break; |
| 111 | } |
| 112 | } |
| 113 | |
| 114 | return 0; |
| 115 | } |
| 116 | |
| 117 | int poptReadDefaultConfig(poptContext con, /*@unused@*/ int useEnv) { |
| 118 | char * fn, * home; |
| 119 | int rc; |
| 120 | |
| 121 | if (!con->appName) return 0; |
| 122 | |
| 123 | rc = poptReadConfigFile(con, "/etc/popt"); |
| 124 | if (rc) return rc; |
| 125 | if (getuid() != geteuid()) return 0; |
| 126 | |
| 127 | if ((home = getenv("HOME"))) { |
| 128 | fn = alloca(strlen(home) + 20); |
| 129 | strcpy(fn, home); |
| 130 | strcat(fn, "/.popt"); |
| 131 | rc = poptReadConfigFile(con, fn); |
| 132 | if (rc) return rc; |
| 133 | } |
| 134 | |
| 135 | return 0; |
| 136 | } |
| 137 | |