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00009 #include "system.h"
00010 #include "poptint.h"
00011
00012
00013 static void configLine(poptContext con, char * line)
00014
00015 {
00016
00017 int nameLength = strlen(con->appName);
00018
00019 const char * entryType;
00020 const char * opt;
00021 poptItem item = alloca(sizeof(*item));
00022 int i, j;
00023
00024 memset(item, 0, sizeof(*item));
00025
00026
00027 if (strncmp(line, con->appName, nameLength)) return;
00028
00029
00030 line += nameLength;
00031 if (*line == '\0' || !isspace(*line)) return;
00032
00033 while (*line != '\0' && isspace(*line)) line++;
00034 entryType = line;
00035 while (*line == '\0' || !isspace(*line)) line++;
00036 *line++ = '\0';
00037
00038 while (*line != '\0' && isspace(*line)) line++;
00039 if (*line == '\0') return;
00040 opt = line;
00041 while (*line == '\0' || !isspace(*line)) line++;
00042 *line++ = '\0';
00043
00044 while (*line != '\0' && isspace(*line)) line++;
00045 if (*line == '\0') return;
00046
00047
00048 if (opt[0] == '-' && opt[1] == '-')
00049 item->option.longName = opt + 2;
00050 else if (opt[0] == '-' && opt[2] == '\0')
00051 item->option.shortName = opt[1];
00052
00053
00054 if (poptParseArgvString(line, &item->argc, &item->argv)) return;
00055
00056
00057 item->option.argInfo = POPT_ARGFLAG_DOC_HIDDEN;
00058 for (i = 0, j = 0; i < item->argc; i++, j++) {
00059 const char * f;
00060 if (!strncmp(item->argv[i], "--POPTdesc=", sizeof("--POPTdesc=")-1)) {
00061 f = item->argv[i] + sizeof("--POPTdesc=");
00062 if (f[0] == '$' && f[1] == '"') f++;
00063 item->option.descrip = f;
00064 item->option.argInfo &= ~POPT_ARGFLAG_DOC_HIDDEN;
00065 j--;
00066 } else
00067 if (!strncmp(item->argv[i], "--POPTargs=", sizeof("--POPTargs=")-1)) {
00068 f = item->argv[i] + sizeof("--POPTargs=");
00069 if (f[0] == '$' && f[1] == '"') f++;
00070 item->option.argDescrip = f;
00071 item->option.argInfo &= ~POPT_ARGFLAG_DOC_HIDDEN;
00072 item->option.argInfo |= POPT_ARG_STRING;
00073 j--;
00074 } else
00075 if (j != i)
00076 item->argv[j] = item->argv[i];
00077 }
00078 if (j != i) {
00079 item->argv[j] = NULL;
00080 item->argc = j;
00081 }
00082
00083
00084
00085 if (!strcmp(entryType, "alias"))
00086 (void) poptAddItem(con, item, 0);
00087 else if (!strcmp(entryType, "exec"))
00088 (void) poptAddItem(con, item, 1);
00089
00090 }
00091
00092
00093 int poptReadConfigFile(poptContext con, const char * fn)
00094 {
00095 const char * file, * chptr, * end;
00096 char * buf;
00097 char * dst;
00098 int fd, rc;
00099 off_t fileLength;
00100
00101 fd = open(fn, O_RDONLY);
00102 if (fd < 0)
00103 return (errno == ENOENT ? 0 : POPT_ERROR_ERRNO);
00104
00105 fileLength = lseek(fd, 0, SEEK_END);
00106 if (fileLength == -1 || lseek(fd, 0, 0) == -1) {
00107 rc = errno;
00108 (void) close(fd);
00109
00110 errno = rc;
00111
00112 return POPT_ERROR_ERRNO;
00113 }
00114
00115 file = alloca(fileLength + 1);
00116 if (read(fd, (char *)file, fileLength) != fileLength) {
00117 rc = errno;
00118 (void) close(fd);
00119
00120 errno = rc;
00121
00122 return POPT_ERROR_ERRNO;
00123 }
00124 if (close(fd) == -1)
00125 return POPT_ERROR_ERRNO;
00126
00127 dst = buf = alloca(fileLength + 1);
00128
00129 chptr = file;
00130 end = (file + fileLength);
00131
00132 while (chptr < end) {
00133 switch (*chptr) {
00134 case '\n':
00135 *dst = '\0';
00136 dst = buf;
00137 while (*dst && isspace(*dst)) dst++;
00138 if (*dst && *dst != '#')
00139 configLine(con, dst);
00140 chptr++;
00141 break;
00142 case '\\':
00143 *dst++ = *chptr++;
00144 if (chptr < end) {
00145 if (*chptr == '\n')
00146 dst--, chptr++;
00147
00148 else
00149 *dst++ = *chptr++;
00150 }
00151 break;
00152 default:
00153 *dst++ = *chptr++;
00154 break;
00155 }
00156 }
00157
00158
00159 return 0;
00160 }
00161
00162 int poptReadDefaultConfig(poptContext con, int useEnv) {
00163 char * fn, * home;
00164 int rc;
00165
00166
00167 if (!con->appName) return 0;
00168
00169
00170 rc = poptReadConfigFile(con, "/etc/popt");
00171 if (rc) return rc;
00172 if (getuid() != geteuid()) return 0;
00173
00174 if ((home = getenv("HOME"))) {
00175 fn = alloca(strlen(home) + 20);
00176 strcpy(fn, home);
00177 strcat(fn, "/.popt");
00178 rc = poptReadConfigFile(con, fn);
00179 if (rc) return rc;
00180 }
00181
00182 return 0;
00183 }