Commit | Line | Data |
---|---|---|
62402cb1 MP |
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 | #ifdef HAVE_CONFIG_H | |
6 | #include "config.h" | |
7 | #endif | |
8 | ||
9 | #include <ctype.h> | |
10 | #include <errno.h> | |
11 | #include <fcntl.h> | |
12 | #include <stdlib.h> | |
13 | #include <string.h> | |
14 | #include <unistd.h> | |
15 | ||
16 | #if HAVE_ALLOCA_H | |
17 | # include <alloca.h> | |
18 | #endif | |
19 | ||
20 | #include "popt.h" | |
21 | #include "poptint.h" | |
22 | ||
23 | static void configLine(poptContext con, char * line) { | |
24 | int nameLength = strlen(con->appName); | |
25 | char * opt; | |
26 | struct poptAlias alias; | |
27 | char * entryType; | |
28 | char * longName = NULL; | |
29 | char shortName = '\0'; | |
30 | ||
31 | if (strncmp(line, con->appName, nameLength)) return; | |
32 | line += nameLength; | |
33 | if (!*line || !isspace(*line)) return; | |
34 | while (*line && isspace(*line)) line++; | |
35 | entryType = line; | |
36 | ||
37 | while (!*line || !isspace(*line)) line++; | |
38 | *line++ = '\0'; | |
39 | while (*line && isspace(*line)) line++; | |
40 | if (!*line) return; | |
41 | opt = line; | |
42 | ||
43 | while (!*line || !isspace(*line)) line++; | |
44 | *line++ = '\0'; | |
45 | while (*line && isspace(*line)) line++; | |
46 | if (!*line) return; | |
47 | ||
48 | if (opt[0] == '-' && opt[1] == '-') | |
49 | longName = opt + 2; | |
50 | else if (opt[0] == '-' && !opt[2]) | |
51 | shortName = opt[1]; | |
52 | ||
53 | if (!strcmp(entryType, "alias")) { | |
54 | if (poptParseArgvString(line, &alias.argc, &alias.argv)) return; | |
55 | alias.longName = longName, alias.shortName = shortName; | |
56 | poptAddAlias(con, alias, 0); | |
57 | } else if (!strcmp(entryType, "exec")) { | |
58 | con->execs = realloc(con->execs, | |
59 | sizeof(*con->execs) * (con->numExecs + 1)); | |
60 | if (longName) | |
61 | con->execs[con->numExecs].longName = strdup(longName); | |
62 | else | |
63 | con->execs[con->numExecs].longName = NULL; | |
64 | ||
65 | con->execs[con->numExecs].shortName = shortName; | |
66 | con->execs[con->numExecs].script = strdup(line); | |
67 | ||
68 | con->numExecs++; | |
69 | } | |
70 | } | |
71 | ||
72 | int poptReadConfigFile(poptContext con, char * fn) { | |
73 | char * file, * chptr, * end; | |
74 | char * buf, * dst; | |
75 | int fd, rc; | |
76 | int fileLength; | |
77 | ||
78 | fd = open(fn, O_RDONLY); | |
79 | if (fd < 0) { | |
80 | if (errno == ENOENT) | |
81 | return 0; | |
82 | else | |
83 | return POPT_ERROR_ERRNO; | |
84 | } | |
85 | ||
86 | fileLength = lseek(fd, 0, SEEK_END); | |
87 | lseek(fd, 0, 0); | |
88 | ||
89 | file = alloca(fileLength + 1); | |
90 | if ((fd = read(fd, file, fileLength)) != fileLength) { | |
91 | rc = errno; | |
92 | close(fd); | |
93 | errno = rc; | |
94 | return POPT_ERROR_ERRNO; | |
95 | } | |
96 | close(fd); | |
97 | ||
98 | dst = buf = alloca(fileLength + 1); | |
99 | ||
100 | chptr = file; | |
101 | end = (file + fileLength); | |
102 | while (chptr < end) { | |
103 | switch (*chptr) { | |
104 | case '\n': | |
105 | *dst = '\0'; | |
106 | dst = buf; | |
107 | while (*dst && isspace(*dst)) dst++; | |
108 | if (*dst && *dst != '#') { | |
109 | configLine(con, dst); | |
110 | } | |
111 | chptr++; | |
112 | break; | |
113 | case '\\': | |
114 | *dst++ = *chptr++; | |
115 | if (chptr < end) { | |
116 | if (*chptr == '\n') | |
117 | dst--, chptr++; | |
118 | /* \ at the end of a line does not insert a \n */ | |
119 | else | |
120 | *dst++ = *chptr++; | |
121 | } | |
122 | break; | |
123 | default: | |
124 | *dst++ = *chptr++; | |
125 | } | |
126 | } | |
127 | ||
128 | return 0; | |
129 | } | |
130 | ||
131 | int poptReadDefaultConfig(poptContext con, int useEnv) { | |
132 | char * fn, * home; | |
133 | int rc; | |
134 | ||
135 | if (!con->appName) return 0; | |
136 | ||
137 | rc = poptReadConfigFile(con, "/etc/popt"); | |
138 | if (rc) return rc; | |
139 | if (getuid() != geteuid()) return 0; | |
140 | ||
141 | if ((home = getenv("HOME"))) { | |
142 | fn = alloca(strlen(home) + 20); | |
143 | strcpy(fn, home); | |
144 | strcat(fn, "/.popt"); | |
145 | rc = poptReadConfigFile(con, fn); | |
146 | if (rc) return rc; | |
147 | } | |
148 | ||
149 | return 0; | |
150 | } | |
151 |