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
|
/* $Id: sendpass.c 7145 2005-04-10 03:28:01Z rra $
**
*/
#include "config.h"
#include "clibrary.h"
#include <ctype.h>
#include <errno.h>
#include "inn/innconf.h"
#include "libinn.h"
#include "nntp.h"
#include "paths.h"
/*
** Send authentication information to an NNTP server.
*/
int NNTPsendpassword(char *server, FILE *FromServer, FILE *ToServer)
{
FILE *F;
char *p;
char *path;
char buff[SMBUF];
char input[SMBUF];
char *user;
char *pass;
char *style;
int oerrno;
/* Default to innconf->server. If that's not set either, error out. Fake
errno since some of our callers rely on it. */
if (server == NULL)
server = innconf->server;
if (server == NULL) {
errno = EINVAL;
return -1;
}
/* Open the password file; coarse check on errno, but good enough. */
path = concatpath(innconf->pathetc, _PATH_NNTPPASS);
F = fopen(path, "r");
free(path);
if (F == NULL)
return errno == EPERM ? -1 : 0;
/* Scan the file, skipping blank and comment lines. */
while (fgets(buff, sizeof buff, F) != NULL) {
if ((p = strchr(buff, '\n')) != NULL)
*p = '\0';
if (buff[0] == '\0' || buff[0] == '#')
continue;
/* Parse the line. */
if ((user = strchr(buff, ':')) == NULL)
continue;
*user++ = '\0';
if ((pass = strchr(user, ':')) == NULL)
continue;
*pass++ = '\0';
if ((style = strchr(pass, ':')) != NULL) {
*style++ = '\0';
if (strcmp(style, "authinfo") != 0) {
errno = EDOM;
break;
}
}
if (strcasecmp(server, buff) != 0)
continue;
if (*user) {
/* Send the first part of the command, get a reply. */
fprintf(ToServer, "authinfo user %s\r\n", user);
if (fflush(ToServer) == EOF || ferror(ToServer))
break;
if (fgets(input, sizeof input, FromServer) == NULL
|| atoi(input) != NNTP_AUTH_NEXT_VAL)
break;
}
if (*pass) {
/* Send the second part of the command, get a reply. */
fprintf(ToServer, "authinfo pass %s\r\n", pass);
if (fflush(ToServer) == EOF || ferror(ToServer))
break;
if (fgets(input, sizeof input, FromServer) == NULL
|| atoi(input) != NNTP_AUTH_OK_VAL)
break;
}
/* Authenticated. */
fclose(F);
return 0;
}
/* End of file without finding a password, that's okay. */
if (feof(F)) {
fclose(F);
return 0;
}
/* Save errno, close the file, fail. */
oerrno = errno;
fclose(F);
errno = oerrno;
return -1;
}
|
