1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
|
/* (C) 1998 Red Hat Software, Inc. -- Licensing details are in the COPYING
file accompanying popt source distributions, available from
ftp://ftp.redhat.com/pub/code/popt */
#include "system.h"
#include "poptint.h"
static void configLine(poptContext con, char * line) {
int nameLength = strlen(con->appName);
char * opt;
struct poptAlias alias;
char * entryType;
char * longName = NULL;
char shortName = '\0';
if (strncmp(line, con->appName, nameLength)) return;
line += nameLength;
if (!*line || !isspace(*line)) return;
while (*line && isspace(*line)) line++;
entryType = line;
while (!*line || !isspace(*line)) line++;
*line++ = '\0';
while (*line && isspace(*line)) line++;
if (!*line) return;
opt = line;
while (!*line || !isspace(*line)) line++;
*line++ = '\0';
while (*line && isspace(*line)) line++;
if (!*line) return;
if (opt[0] == '-' && opt[1] == '-')
longName = opt + 2;
else if (opt[0] == '-' && !opt[2])
shortName = opt[1];
if (!strcmp(entryType, "alias")) {
if (poptParseArgvString(line, &alias.argc, &alias.argv)) return;
alias.longName = longName, alias.shortName = shortName;
poptAddAlias(con, alias, 0);
} else if (!strcmp(entryType, "exec")) {
con->execs = realloc(con->execs,
sizeof(*con->execs) * (con->numExecs + 1));
if (longName)
con->execs[con->numExecs].longName = xstrdup(longName);
else
con->execs[con->numExecs].longName = NULL;
con->execs[con->numExecs].shortName = shortName;
con->execs[con->numExecs].script = xstrdup(line);
con->numExecs++;
}
}
int poptReadConfigFile(poptContext con, const char * fn) {
char * file=NULL, * chptr, * end;
char * buf=NULL, * dst;
int fd, rc;
int fileLength;
fd = open(fn, O_RDONLY);
if (fd < 0) {
if (errno == ENOENT)
return 0;
else
return POPT_ERROR_ERRNO;
}
fileLength = lseek(fd, 0, SEEK_END);
(void) lseek(fd, 0, 0);
file = malloc(fileLength + 1);
if (read(fd, file, fileLength) != fileLength) {
rc = errno;
close(fd);
errno = rc;
if (file) free(file);
return POPT_ERROR_ERRNO;
}
close(fd);
dst = buf = malloc(fileLength + 1);
chptr = file;
end = (file + fileLength);
while (chptr < end) {
switch (*chptr) {
case '\n':
*dst = '\0';
dst = buf;
while (*dst && isspace(*dst)) dst++;
if (*dst && *dst != '#') {
configLine(con, dst);
}
chptr++;
break;
case '\\':
*dst++ = *chptr++;
if (chptr < end) {
if (*chptr == '\n')
dst--, chptr++;
/* \ at the end of a line does not insert a \n */
else
*dst++ = *chptr++;
}
break;
default:
*dst++ = *chptr++;
break;
}
}
free(file);
free(buf);
return 0;
}
int poptReadDefaultConfig(poptContext con, /*@unused@*/ int useEnv) {
char * fn, * home;
int rc;
if (!con->appName) return 0;
rc = poptReadConfigFile(con, "/etc/popt");
if (rc) return rc;
if (getuid() != geteuid()) return 0;
if ((home = getenv("HOME"))) {
fn = malloc(strlen(home) + 20);
strcpy(fn, home);
strcat(fn, "/.popt");
rc = poptReadConfigFile(con, fn);
free(fn);
if (rc) return rc;
}
return 0;
}
|
