1 |
lefcha |
1.1 |
#include <stdio.h> |
2 |
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#include <unistd.h> |
3 |
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#include <stdlib.h> |
4 |
lefcha |
1.9 |
#include <ctype.h> |
5 |
lefcha |
1.4 |
#include <errno.h> |
6 |
lefcha |
1.1 |
#include <string.h> |
7 |
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#include <sys/time.h> |
8 |
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#include <sys/types.h> |
9 |
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#include <regex.h> |
10 |
lefcha |
1.26 |
#include <setjmp.h> |
11 |
lefcha |
1.1 |
|
12 |
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#include "config.h" |
13 |
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#include "imapfilter.h" |
14 |
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15 |
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16 |
lefcha |
1.20 |
extern int sockpri; |
17 |
lefcha |
1.18 |
extern unsigned int capabilities; |
18 |
lefcha |
1.31 |
extern char authmech[AUTH_MECH_LEN]; |
19 |
lefcha |
1.26 |
extern jmp_buf acctloop; |
20 |
lefcha |
1.1 |
|
21 |
lefcha |
1.20 |
static char *vbuf = NULL; /* Virtual buffer. */ |
22 |
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static size_t vbufs = 0; /* Virtual buffer size. */ |
23 |
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24 |
lefcha |
1.1 |
|
25 |
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/* |
26 |
lefcha |
1.14 |
* Read one packet of data that the server sent. |
27 |
lefcha |
1.1 |
*/ |
28 |
lefcha |
1.33 |
void |
29 |
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receive_response(int *sock, char *buf) |
30 |
lefcha |
1.1 |
{ |
31 |
lefcha |
1.33 |
if (socket_read(sock, buf) == ERROR_NETWORK) |
32 |
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longjmp(acctloop, -1); |
33 |
lefcha |
1.1 |
|
34 |
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#ifdef DEBUG |
35 |
lefcha |
1.33 |
fprintf(stderr, "\n%s\n", buf); |
36 |
lefcha |
1.1 |
#endif |
37 |
lefcha |
1.11 |
|
38 |
lefcha |
1.1 |
} |
39 |
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40 |
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|
41 |
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/* |
42 |
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* Get server response to client's request. |
43 |
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*/ |
44 |
lefcha |
1.33 |
int |
45 |
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server_response(int *sock, unsigned int tag) |
46 |
lefcha |
1.1 |
{ |
47 |
lefcha |
1.33 |
char buf[RESPONSE_BUF]; |
48 |
lefcha |
1.6 |
|
49 |
lefcha |
1.33 |
reset_vbuf(); |
50 |
lefcha |
1.21 |
|
51 |
lefcha |
1.33 |
do { |
52 |
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receive_response(sock, buf); |
53 |
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bye_response(buf); |
54 |
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check_vbuf(strlen(buf)); |
55 |
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strncat(vbuf, buf, vbufs - strlen(vbuf)); |
56 |
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} while (!strcasestr(buf, ultostr(tag, 16))); |
57 |
lefcha |
1.6 |
|
58 |
lefcha |
1.33 |
return analyze_response(buf); |
59 |
lefcha |
1.1 |
} |
60 |
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61 |
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62 |
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/* |
63 |
lefcha |
1.26 |
* Check if server sent a BYE response (connection is closed immediately). |
64 |
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*/ |
65 |
lefcha |
1.33 |
void |
66 |
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bye_response(char *buf) |
67 |
lefcha |
1.26 |
{ |
68 |
lefcha |
1.33 |
if (strcasestr(buf, "* BYE")) |
69 |
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longjmp(acctloop, -1); |
70 |
lefcha |
1.26 |
} |
71 |
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72 |
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73 |
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/* |
74 |
lefcha |
1.9 |
* Process the greeting that server sends during connection. |
75 |
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*/ |
76 |
lefcha |
1.33 |
int |
77 |
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greeting_response(int *sock) |
78 |
lefcha |
1.9 |
{ |
79 |
lefcha |
1.33 |
char buf[RESPONSE_BUF]; |
80 |
lefcha |
1.9 |
|
81 |
lefcha |
1.33 |
receive_response(sock, buf); |
82 |
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bye_response(buf); |
83 |
lefcha |
1.9 |
|
84 |
lefcha |
1.33 |
if (strcasestr(buf, "* PREAUTH")) |
85 |
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return RESPONSE_PREAUTH; |
86 |
lefcha |
1.9 |
|
87 |
lefcha |
1.33 |
return RESPONSE_OK; |
88 |
lefcha |
1.9 |
} |
89 |
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|
90 |
lefcha |
1.13 |
|
91 |
lefcha |
1.9 |
/* |
92 |
lefcha |
1.25 |
* Process the data that server sent due to IMAP LOGOUT client request. |
93 |
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*/ |
94 |
lefcha |
1.33 |
int |
95 |
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logout_response(int *sock, unsigned int tag) |
96 |
lefcha |
1.25 |
{ |
97 |
lefcha |
1.33 |
char buf[RESPONSE_BUF]; |
98 |
lefcha |
1.25 |
|
99 |
lefcha |
1.33 |
reset_vbuf(); |
100 |
lefcha |
1.25 |
|
101 |
lefcha |
1.33 |
do { |
102 |
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receive_response(sock, buf); |
103 |
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check_vbuf(strlen(buf)); |
104 |
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strncat(vbuf, buf, vbufs - strlen(vbuf)); |
105 |
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} while (!strcasestr(buf, ultostr(tag, 16))); |
106 |
lefcha |
1.25 |
|
107 |
lefcha |
1.33 |
return analyze_response(buf); |
108 |
lefcha |
1.25 |
} |
109 |
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110 |
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111 |
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/* |
112 |
lefcha |
1.9 |
* Process the data that server sent due to IMAP CAPABILITY client request. |
113 |
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*/ |
114 |
lefcha |
1.33 |
int |
115 |
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capability_response(int *sock, unsigned int tag) |
116 |
lefcha |
1.9 |
{ |
117 |
lefcha |
1.33 |
char buf[RESPONSE_BUF]; |
118 |
lefcha |
1.21 |
|
119 |
lefcha |
1.33 |
reset_vbuf(); |
120 |
lefcha |
1.9 |
|
121 |
lefcha |
1.33 |
do { |
122 |
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receive_response(sock, buf); |
123 |
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bye_response(buf); |
124 |
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check_vbuf(strlen(buf)); |
125 |
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strncat(vbuf, buf, vbufs - strlen(vbuf)); |
126 |
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} while (!strcasestr(buf, ultostr(tag, 16))); |
127 |
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128 |
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if (!strcasestr(vbuf, "IMAP4rev1")) { |
129 |
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error("server does not support IMAP4rev1 protocol\n"); |
130 |
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return -2; |
131 |
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} |
132 |
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if (strcasestr(vbuf, "NAMESPACE")) |
133 |
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capabilities |= CAPABILITY_NAMESPACE; |
134 |
lefcha |
1.18 |
|
135 |
lefcha |
1.33 |
auth_mechanisms(); |
136 |
lefcha |
1.31 |
|
137 |
lefcha |
1.33 |
return analyze_response(buf); |
138 |
lefcha |
1.18 |
} |
139 |
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140 |
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|
141 |
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/* |
142 |
lefcha |
1.31 |
* Create the list of available authentication mechanisms. |
143 |
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*/ |
144 |
lefcha |
1.33 |
void |
145 |
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auth_mechanisms(void) |
146 |
lefcha |
1.31 |
{ |
147 |
lefcha |
1.33 |
int len; |
148 |
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char *c, *cp, *tok; |
149 |
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|
150 |
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*authmech = '\0'; |
151 |
lefcha |
1.31 |
|
152 |
lefcha |
1.33 |
c = cp = xstrdup(vbuf); |
153 |
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154 |
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tok = strtok_r(c, " \r\n", &c); |
155 |
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while (tok) { |
156 |
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if (strcasestr(tok, "AUTH=")) { |
157 |
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strncat(authmech, tok + 5, |
158 |
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AUTH_MECH_LEN - strlen(authmech) - 2); |
159 |
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len = strlen(authmech); |
160 |
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*(authmech + len) = ' '; |
161 |
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*(authmech + len + 1) = 0; |
162 |
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} |
163 |
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tok = strtok_r(NULL, " \r\n", &c); |
164 |
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} |
165 |
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if ((len = strlen(authmech)) != 0) |
166 |
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*(authmech + strlen(authmech) - 1) = 0; |
167 |
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168 |
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xfree(cp); |
169 |
lefcha |
1.31 |
|
170 |
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#ifdef DEBUG |
171 |
lefcha |
1.33 |
fprintf(stderr, "debug: authentication mechanisms: '%s'\n", authmech); |
172 |
lefcha |
1.31 |
#endif |
173 |
lefcha |
1.33 |
|
174 |
lefcha |
1.31 |
} |
175 |
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176 |
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|
177 |
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/* |
178 |
lefcha |
1.18 |
* Process the data that server sent due to IMAP NAMESPACE client request. |
179 |
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*/ |
180 |
lefcha |
1.33 |
int |
181 |
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namespace_response(int *sock, unsigned int tag, namesp_t * nsp) |
182 |
lefcha |
1.18 |
{ |
183 |
lefcha |
1.33 |
char buf[RESPONSE_BUF]; |
184 |
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char *c, *d; |
185 |
lefcha |
1.18 |
|
186 |
lefcha |
1.33 |
reset_vbuf(); |
187 |
lefcha |
1.21 |
|
188 |
lefcha |
1.33 |
do { |
189 |
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receive_response(sock, buf); |
190 |
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bye_response(buf); |
191 |
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check_vbuf(strlen(buf)); |
192 |
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strncat(vbuf, buf, vbufs - strlen(vbuf)); |
193 |
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} while (!strcasestr(buf, ultostr(tag, 16))); |
194 |
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195 |
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if ((c = strcasestr(vbuf, "* NAMESPACE"))) { |
196 |
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c += 12; |
197 |
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if (strncasecmp(c, "NIL", 3)) { |
198 |
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c = strchr(c, '"') + 1; |
199 |
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d = strchr(c, '"') + 1; |
200 |
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201 |
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strncat(nsp->prefix, c, d - c - 1); |
202 |
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nsp->delim = *(strchr(d, '"') + 1); |
203 |
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} |
204 |
lefcha |
1.18 |
} |
205 |
lefcha |
1.20 |
#ifdef DEBUG |
206 |
lefcha |
1.33 |
fprintf(stderr, "debug: namespace: '%s' '%c'\n", nsp->prefix, |
207 |
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nsp->delim); |
208 |
lefcha |
1.20 |
#endif |
209 |
lefcha |
1.33 |
return analyze_response(buf); |
210 |
lefcha |
1.9 |
} |
211 |
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212 |
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213 |
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/* |
214 |
lefcha |
1.3 |
* Process the data that server sent due to IMAP STATUS client request. |
215 |
lefcha |
1.1 |
*/ |
216 |
lefcha |
1.33 |
int |
217 |
|
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status_response(int *sock, unsigned int tag, char *mbox) |
218 |
lefcha |
1.1 |
{ |
219 |
lefcha |
1.33 |
int r; |
220 |
|
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char buf[RESPONSE_BUF]; |
221 |
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unsigned int exist, recent, unseen; |
222 |
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char *c; |
223 |
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|
224 |
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exist = recent = unseen = 0; |
225 |
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|
226 |
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reset_vbuf(); |
227 |
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228 |
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do { |
229 |
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receive_response(sock, buf); |
230 |
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bye_response(buf); |
231 |
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check_vbuf(strlen(buf)); |
232 |
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strncat(vbuf, buf, vbufs - strlen(vbuf)); |
233 |
|
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} while (!strcasestr(buf, ultostr(tag, 16))); |
234 |
lefcha |
1.1 |
|
235 |
lefcha |
1.33 |
r = analyze_response(buf); |
236 |
lefcha |
1.21 |
|
237 |
lefcha |
1.33 |
if (r == RESPONSE_NO) |
238 |
|
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return -2; |
239 |
lefcha |
1.1 |
|
240 |
lefcha |
1.33 |
if ((c = strcasestr(vbuf, "MESSAGES"))) { |
241 |
|
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c += 9; |
242 |
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exist = strtoul(c, NULL, 10); |
243 |
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} |
244 |
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if ((c = strcasestr(vbuf, "RECENT"))) { |
245 |
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c += 7; |
246 |
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recent = strtoul(c, NULL, 10); |
247 |
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} |
248 |
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if ((c = strcasestr(vbuf, "UNSEEN"))) { |
249 |
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c += 7; |
250 |
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unseen = strtoul(c, NULL, 10); |
251 |
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} |
252 |
|
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if (exist == 0) { |
253 |
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info("No messages in mailbox \"%s\".\n", mbox); |
254 |
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return -2; |
255 |
|
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} |
256 |
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info("%d message%s, %d recent, %d unseen, in mailbox \"%s\".\n", exist, |
257 |
|
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plural(exist), recent, unseen, mbox); |
258 |
lefcha |
1.9 |
|
259 |
lefcha |
1.33 |
return r; |
260 |
lefcha |
1.9 |
} |
261 |
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|
262 |
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|
263 |
|
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/* |
264 |
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* Process the data that server sent due to IMAP SELECT client request. |
265 |
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*/ |
266 |
lefcha |
1.33 |
int |
267 |
|
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select_response(int *sock, unsigned int tag) |
268 |
lefcha |
1.9 |
{ |
269 |
lefcha |
1.33 |
char buf[RESPONSE_BUF]; |
270 |
lefcha |
1.9 |
|
271 |
lefcha |
1.33 |
reset_vbuf(); |
272 |
lefcha |
1.21 |
|
273 |
lefcha |
1.33 |
do { |
274 |
|
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receive_response(sock, buf); |
275 |
|
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bye_response(buf); |
276 |
|
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check_vbuf(strlen(buf)); |
277 |
|
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strncat(vbuf, buf, vbufs - strlen(vbuf)); |
278 |
|
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} while (!strcasestr(buf, ultostr(tag, 16))); |
279 |
lefcha |
1.9 |
|
280 |
lefcha |
1.33 |
if (strcasestr(vbuf, "[READ-ONLY]")) |
281 |
|
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return RESPONSE_READONLY; |
282 |
lefcha |
1.1 |
|
283 |
lefcha |
1.33 |
return analyze_response(buf); |
284 |
lefcha |
1.1 |
} |
285 |
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|
286 |
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|
287 |
|
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/* |
288 |
lefcha |
1.3 |
* Process the data that server sent due to IMAP SEARCH client request. |
289 |
lefcha |
1.1 |
*/ |
290 |
lefcha |
1.33 |
int |
291 |
|
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search_response(int *sock, unsigned int tag, char **mesgs) |
292 |
lefcha |
1.1 |
{ |
293 |
lefcha |
1.33 |
char buf[RESPONSE_BUF]; |
294 |
|
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char *c, *m; |
295 |
|
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unsigned int blen; |
296 |
lefcha |
1.13 |
|
297 |
lefcha |
1.33 |
reset_vbuf(); |
298 |
lefcha |
1.21 |
|
299 |
lefcha |
1.33 |
do { |
300 |
|
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receive_response(sock, buf); |
301 |
|
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bye_response(buf); |
302 |
|
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check_vbuf(strlen(buf)); |
303 |
|
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strncat(vbuf, buf, vbufs - strlen(vbuf)); |
304 |
|
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} while (!strcasestr(buf, ultostr(tag, 16))); |
305 |
lefcha |
1.1 |
|
306 |
lefcha |
1.33 |
if ((c = strcasestr(vbuf, "* SEARCH "))) { |
307 |
|
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blen = strlen(vbuf); |
308 |
lefcha |
1.21 |
|
309 |
lefcha |
1.33 |
m = *mesgs = (char *)xmalloc(blen + 1); |
310 |
lefcha |
1.21 |
|
311 |
lefcha |
1.33 |
c += 9; |
312 |
lefcha |
1.21 |
|
313 |
lefcha |
1.33 |
while (*c != '\0' && (isdigit(*c) || *c == ' ')) |
314 |
|
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*(m++) = *(c++); |
315 |
lefcha |
1.14 |
|
316 |
lefcha |
1.33 |
*m = 0; |
317 |
|
|
} |
318 |
|
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return analyze_response(buf); |
319 |
lefcha |
1.1 |
} |
320 |
|
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|
321 |
|
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|
322 |
|
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/* |
323 |
lefcha |
1.3 |
* Process the data that server sent due to IMAP FETCH client request. |
324 |
lefcha |
1.1 |
*/ |
325 |
lefcha |
1.33 |
int |
326 |
|
|
fetch_response(int *sock, unsigned int tag, int reset, char *fetch) |
327 |
lefcha |
1.1 |
{ |
328 |
lefcha |
1.33 |
char buf[RESPONSE_BUF]; |
329 |
|
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unsigned int i; |
330 |
|
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static unsigned int s; |
331 |
|
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char *b; |
332 |
|
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|
333 |
|
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if (reset) { |
334 |
|
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s = 0; |
335 |
|
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return 0; |
336 |
|
|
} |
337 |
|
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i = 0; |
338 |
lefcha |
1.20 |
|
339 |
lefcha |
1.33 |
reset_vbuf(); |
340 |
lefcha |
1.20 |
|
341 |
lefcha |
1.33 |
do { |
342 |
|
|
receive_response(sock, buf); |
343 |
|
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bye_response(buf); |
344 |
|
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check_vbuf(strlen(buf)); |
345 |
|
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strncat(vbuf, buf, vbufs - strlen(vbuf)); |
346 |
|
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} while (strlen(vbuf) < RESPONSE_BUF && |
347 |
|
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!strcasestr(buf, ultostr(tag, 16))); |
348 |
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|
349 |
|
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b = vbuf; |
350 |
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|
351 |
|
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if (s == 0) { |
352 |
|
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if ((b = strstr(b, "}\r\n"))) { |
353 |
|
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while (b - vbuf > 0) |
354 |
|
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if (*--b == '{') |
355 |
|
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break; |
356 |
|
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s = atoi(++b) - 2; |
357 |
|
|
b = strchr(b, '}'); |
358 |
|
|
b += 3; |
359 |
|
|
} else { |
360 |
|
|
return RESPONSE_NULLBODY; /* Null body. */ |
361 |
|
|
} |
362 |
|
|
} |
363 |
|
|
while (*b != '\0' && s-- != 0) |
364 |
|
|
fetch[i++] = *(b++); |
365 |
lefcha |
1.20 |
|
366 |
lefcha |
1.33 |
fetch[i] = '\0'; |
367 |
lefcha |
1.21 |
|
368 |
lefcha |
1.33 |
return analyze_response(buf); |
369 |
lefcha |
1.20 |
} |
370 |
|
|
|
371 |
lefcha |
1.6 |
|
372 |
lefcha |
1.20 |
/* |
373 |
|
|
* Process the data that server sent due to IMAP FETCH RFC822.SIZE client |
374 |
|
|
* request. |
375 |
|
|
*/ |
376 |
lefcha |
1.33 |
int |
377 |
|
|
fetchsize_response(int *sock, unsigned int *size, unsigned int tag) |
378 |
lefcha |
1.20 |
{ |
379 |
lefcha |
1.33 |
char buf[RESPONSE_BUF]; |
380 |
|
|
char *c; |
381 |
lefcha |
1.21 |
|
382 |
lefcha |
1.33 |
*size = 0; |
383 |
lefcha |
1.21 |
|
384 |
lefcha |
1.33 |
reset_vbuf(); |
385 |
|
|
|
386 |
|
|
do { |
387 |
|
|
receive_response(sock, buf); |
388 |
|
|
bye_response(buf); |
389 |
|
|
check_vbuf(strlen(buf)); |
390 |
|
|
strncat(vbuf, buf, vbufs - strlen(vbuf)); |
391 |
|
|
} while (!strcasestr(buf, ultostr(tag, 16))); |
392 |
|
|
|
393 |
|
|
if ((c = strcasestr(vbuf, "FETCH (RFC822.SIZE "))) { |
394 |
|
|
c += 19; |
395 |
|
|
*size = strtoul(c, NULL, 10); |
396 |
|
|
} |
397 |
|
|
return analyze_response(buf); |
398 |
lefcha |
1.20 |
} |
399 |
lefcha |
1.13 |
|
400 |
lefcha |
1.6 |
|
401 |
lefcha |
1.20 |
/* |
402 |
|
|
* Process the data that server sent due to IMAP APPEND client request. |
403 |
|
|
*/ |
404 |
lefcha |
1.33 |
int |
405 |
|
|
append_response(int *sock, unsigned int tag) |
406 |
lefcha |
1.20 |
{ |
407 |
lefcha |
1.33 |
int r; |
408 |
|
|
char buf[RESPONSE_BUF]; |
409 |
|
|
|
410 |
|
|
r = RESPONSE_OK; |
411 |
lefcha |
1.21 |
|
412 |
lefcha |
1.33 |
reset_vbuf(); |
413 |
lefcha |
1.21 |
|
414 |
lefcha |
1.33 |
do { |
415 |
|
|
receive_response(sock, buf); |
416 |
|
|
bye_response(buf); |
417 |
|
|
check_vbuf(strlen(buf)); |
418 |
|
|
strncat(vbuf, buf, vbufs - strlen(vbuf)); |
419 |
|
|
} while (!strcasestr(buf, ultostr(tag, 16))); |
420 |
|
|
|
421 |
|
|
if ((r = analyze_response(buf)) == RESPONSE_NO && |
422 |
|
|
strcasestr(vbuf, "[TRYCREATE]")) |
423 |
|
|
return RESPONSE_TRYCREATE; |
424 |
lefcha |
1.6 |
|
425 |
lefcha |
1.33 |
return r; |
426 |
lefcha |
1.1 |
} |
427 |
|
|
|
428 |
|
|
|
429 |
|
|
/* |
430 |
lefcha |
1.3 |
* Process the data that server sent due to IMAP COPY client request. |
431 |
lefcha |
1.1 |
*/ |
432 |
lefcha |
1.33 |
int |
433 |
|
|
copy_response(int *sock, unsigned int tag) |
434 |
lefcha |
1.1 |
{ |
435 |
lefcha |
1.33 |
int r; |
436 |
|
|
char buf[RESPONSE_BUF]; |
437 |
lefcha |
1.21 |
|
438 |
lefcha |
1.33 |
r = RESPONSE_OK; |
439 |
lefcha |
1.1 |
|
440 |
lefcha |
1.33 |
reset_vbuf(); |
441 |
|
|
|
442 |
|
|
do { |
443 |
|
|
receive_response(sock, buf); |
444 |
|
|
bye_response(buf); |
445 |
|
|
check_vbuf(strlen(buf)); |
446 |
|
|
strncat(vbuf, buf, vbufs - strlen(vbuf)); |
447 |
|
|
} while (!strcasestr(buf, ultostr(tag, 16))); |
448 |
|
|
|
449 |
|
|
if ((r = analyze_response(buf)) == RESPONSE_NO && |
450 |
|
|
strcasestr(vbuf, "[TRYCREATE]")) |
451 |
|
|
return RESPONSE_TRYCREATE; |
452 |
lefcha |
1.1 |
|
453 |
lefcha |
1.33 |
return r; |
454 |
lefcha |
1.1 |
} |
455 |
|
|
|
456 |
|
|
|
457 |
|
|
/* |
458 |
lefcha |
1.3 |
* Check if response of server to client's request was succesfully |
459 |
lefcha |
1.1 |
* delivered or there was some kind of error. |
460 |
|
|
*/ |
461 |
lefcha |
1.33 |
int |
462 |
|
|
analyze_response(char *buf) |
463 |
lefcha |
1.1 |
{ |
464 |
lefcha |
1.33 |
int r; |
465 |
|
|
regex_t creg; |
466 |
|
|
regmatch_t match[3]; |
467 |
|
|
const char *reg; |
468 |
|
|
char result[RESULT_BUF]; |
469 |
lefcha |
1.1 |
|
470 |
lefcha |
1.33 |
r = RESPONSE_OK; |
471 |
|
|
reg = "[[:xdigit:]]{6,6} ((OK|NO|BAD)[[:print:]]*)\r\n"; |
472 |
|
|
result[0] = '\0'; |
473 |
lefcha |
1.4 |
|
474 |
lefcha |
1.33 |
regcomp(&creg, reg, REG_EXTENDED | REG_ICASE); |
475 |
lefcha |
1.6 |
|
476 |
lefcha |
1.33 |
if (!regexec(&creg, buf, 3, match, 0)) { |
477 |
|
|
strncat(result, buf + match[1].rm_so, |
478 |
|
|
min(match[1].rm_eo - match[1].rm_so, RESULT_BUF - 1)); |
479 |
lefcha |
1.1 |
|
480 |
lefcha |
1.33 |
if (!strncasecmp(buf + match[2].rm_so, "NO", 2)) |
481 |
|
|
r = RESPONSE_NO; |
482 |
|
|
else if (!strncasecmp(buf + match[2].rm_so, "BAD", 3)) |
483 |
|
|
r = RESPONSE_BAD; |
484 |
lefcha |
1.6 |
|
485 |
lefcha |
1.33 |
verbose("Server response: %s\n", result); |
486 |
|
|
} else |
487 |
|
|
r = RESPONSE_NONE; |
488 |
lefcha |
1.21 |
|
489 |
lefcha |
1.33 |
regfree(&creg); |
490 |
lefcha |
1.1 |
|
491 |
lefcha |
1.33 |
return r; |
492 |
lefcha |
1.20 |
} |
493 |
|
|
|
494 |
|
|
|
495 |
|
|
/* |
496 |
|
|
* Initialize virtual buffer. |
497 |
|
|
*/ |
498 |
lefcha |
1.33 |
void |
499 |
|
|
init_vbuf(void) |
500 |
lefcha |
1.20 |
{ |
501 |
lefcha |
1.33 |
vbuf = xmalloc(VIRTUAL_BUF); |
502 |
|
|
*vbuf = '\0'; |
503 |
|
|
vbufs = VIRTUAL_BUF; |
504 |
lefcha |
1.20 |
} |
505 |
|
|
|
506 |
|
|
|
507 |
|
|
/* |
508 |
|
|
* Reset virtual buffer. |
509 |
|
|
*/ |
510 |
lefcha |
1.33 |
void |
511 |
|
|
reset_vbuf(void) |
512 |
lefcha |
1.20 |
{ |
513 |
lefcha |
1.33 |
*vbuf = '\0'; |
514 |
lefcha |
1.20 |
} |
515 |
|
|
|
516 |
|
|
|
517 |
|
|
/* |
518 |
|
|
* Check if virtual buffer is full and make it bigger. |
519 |
|
|
*/ |
520 |
lefcha |
1.33 |
void |
521 |
|
|
check_vbuf(size_t n) |
522 |
lefcha |
1.20 |
{ |
523 |
lefcha |
1.33 |
if (n + strlen(vbuf) >= vbufs) { |
524 |
|
|
vbufs += VIRTUAL_BUF; |
525 |
|
|
vbuf = xrealloc(vbuf, vbufs); |
526 |
|
|
} |
527 |
lefcha |
1.1 |
} |