14 |
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15 |
extern unsigned int options; |
extern unsigned int options; |
16 |
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static char *packet = NULL; /* Pointer to dynamically allocated packet |
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buffer. */ |
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static unsigned long pms = 0; /* Current memory size of packet. */ |
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17 |
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18 |
/* |
/* |
19 |
* Allocate initial ammount of memory for the packet. |
* Read one packet of data that the server sent. |
20 |
*/ |
*/ |
21 |
void packet_alloc(void) |
void receive_response(char *buf) |
22 |
{ |
{ |
23 |
if (packet) |
socket_read(buf); |
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return; |
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packet = (char *) xmalloc(PACKET_SIZE + 1); |
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packet[0] = 0; |
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pms = PACKET_SIZE; |
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24 |
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25 |
#ifdef DEBUG |
#ifdef DEBUG |
26 |
printf("debug: packet memory size: %lu\n", pms); |
printf("\n%s\n", buf); |
27 |
#endif |
#endif |
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} |
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/* |
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* Reallocate more memory for the packet. |
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*/ |
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void packet_realloc(void) |
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{ |
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if (strlen(packet) >= pms - SOCKET_READ_BUF) { |
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packet = (char *) xrealloc(packet, pms + PACKET_SIZE + 1); |
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pms += PACKET_SIZE; |
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#ifdef DEBUG |
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printf("debug: packet memory size: %lu\n", pms); |
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#endif |
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} |
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} |
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28 |
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/* |
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* Prepare the packet space for a new server response to arrive. |
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*/ |
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void packet_clear(void) |
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{ |
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packet[0] = 0; |
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} |
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/* |
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* Read one data fragment, server's response, and put it to concatenate to |
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* packet. |
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*/ |
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void receive_response(void) |
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{ |
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packet_alloc(); |
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packet_realloc(); |
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socket_read(packet); |
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29 |
} |
} |
30 |
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31 |
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34 |
*/ |
*/ |
35 |
int server_response(unsigned int tag) |
int server_response(unsigned int tag) |
36 |
{ |
{ |
37 |
packet_clear(); |
char buf[RESPONSE_BUF]; |
38 |
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39 |
do |
do |
40 |
receive_response(); |
receive_response(buf); |
41 |
while (tag && !strcasestr(packet, ultostr(tag, 16))); |
while (tag && !strcasestr(buf, ultostr(tag, 16))); |
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#ifdef DEBUG |
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printf("\n%s\n", packet); |
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#endif |
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42 |
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43 |
return analyze_response(); |
return analyze_response(buf); |
44 |
} |
} |
45 |
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46 |
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49 |
*/ |
*/ |
50 |
int greeting_response(void) |
int greeting_response(void) |
51 |
{ |
{ |
52 |
receive_response(); |
char buf[RESPONSE_BUF]; |
53 |
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54 |
#ifdef DEBUG |
receive_response(buf); |
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printf("\n%s\n", packet); |
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#endif |
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55 |
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56 |
if (strcasestr(packet, "BYE")) |
if (strcasestr(buf, "BYE")) |
57 |
return RESPONSE_BYE; |
return RESPONSE_BYE; |
58 |
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else if (strcasestr(buf, "PREAUTH")) |
59 |
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return RESPONSE_PREAUTH; |
60 |
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61 |
return RESPONSE_OK; |
return RESPONSE_OK; |
62 |
} |
} |
67 |
*/ |
*/ |
68 |
int capability_response(unsigned int tag) |
int capability_response(unsigned int tag) |
69 |
{ |
{ |
70 |
packet_clear(); |
char buf[RESPONSE_BUF]; |
71 |
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72 |
do |
do |
73 |
receive_response(); |
receive_response(buf); |
74 |
while (!strcasestr(packet, ultostr(tag, 16))); |
while (!strcasestr(buf, ultostr(tag, 16))); |
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#ifdef DEBUG |
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printf("\n%s\n", packet); |
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#endif |
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75 |
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76 |
if (!strcasestr(packet, "IMAP4rev1")) { |
if (!strcasestr(buf, "IMAP4rev1")) { |
77 |
error("imapfilter: server does not support IMAP4rev1 protocol\n"); |
error("imapfilter: server does not support IMAP4rev1 protocol\n"); |
78 |
return -2; |
return -2; |
79 |
} |
} |
80 |
return analyze_response(); |
return analyze_response(buf); |
81 |
} |
} |
82 |
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83 |
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86 |
*/ |
*/ |
87 |
int status_response(unsigned int tag) |
int status_response(unsigned int tag) |
88 |
{ |
{ |
89 |
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char buf[RESPONSE_BUF]; |
90 |
unsigned int exist, recent, unseen; |
unsigned int exist, recent, unseen; |
91 |
char *c; |
char *c; |
92 |
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packet_clear(); |
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93 |
exist = recent = unseen = 0; |
exist = recent = unseen = 0; |
94 |
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95 |
do { |
do |
96 |
receive_response(); |
receive_response(buf); |
97 |
} while (!strcasestr(packet, ultostr(tag, 16))); |
while (!strcasestr(buf, ultostr(tag, 16))); |
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#ifdef DEBUG |
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printf("\n%s\n", packet); |
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#endif |
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98 |
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99 |
if ((c = strcasestr(packet, "MESSAGES"))) { |
if ((c = strcasestr(buf, "MESSAGES"))) { |
100 |
c += 9; |
c += 9; |
101 |
exist = strtoul(c, NULL, 10); |
exist = strtoul(c, NULL, 10); |
102 |
} |
} |
103 |
if ((c = strcasestr(packet, "RECENT"))) { |
if ((c = strcasestr(buf, "RECENT"))) { |
104 |
c += 7; |
c += 7; |
105 |
recent = strtoul(c, NULL, 10); |
recent = strtoul(c, NULL, 10); |
106 |
} |
} |
107 |
if ((c = strcasestr(packet, "UNSEEN"))) { |
if ((c = strcasestr(buf, "UNSEEN"))) { |
108 |
c += 7; |
c += 7; |
109 |
unseen = strtoul(c, NULL, 10); |
unseen = strtoul(c, NULL, 10); |
110 |
} |
} |
115 |
info("%d message%s, %d recent, %d unseen, ", exist, plural(exist), |
info("%d message%s, %d recent, %d unseen, ", exist, plural(exist), |
116 |
recent, unseen); |
recent, unseen); |
117 |
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118 |
return analyze_response(); |
return analyze_response(buf); |
119 |
} |
} |
120 |
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121 |
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124 |
*/ |
*/ |
125 |
int select_response(unsigned int tag) |
int select_response(unsigned int tag) |
126 |
{ |
{ |
127 |
packet_clear(); |
char buf[RESPONSE_BUF]; |
128 |
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129 |
do |
do |
130 |
receive_response(); |
receive_response(buf); |
131 |
while (!strcasestr(packet, ultostr(tag, 16))); |
while (!strcasestr(buf, ultostr(tag, 16))); |
132 |
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133 |
#ifdef DEBUG |
if (strcasestr(buf, "[READ-ONLY]")) |
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printf("\n%s\n", packet); |
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#endif |
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if (strcasestr(packet, "[READ-ONLY]")) |
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134 |
return RESPONSE_READONLY; |
return RESPONSE_READONLY; |
135 |
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136 |
return analyze_response(); |
return analyze_response(buf); |
137 |
} |
} |
138 |
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139 |
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142 |
*/ |
*/ |
143 |
int search_response(unsigned int tag, char **mesgs) |
int search_response(unsigned int tag, char **mesgs) |
144 |
{ |
{ |
145 |
int cnt = -1; |
char buf[RESPONSE_BUF]; |
146 |
char *c, *m; |
char *c, *m; |
147 |
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unsigned long f, blen, mlen; |
148 |
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149 |
packet_clear(); |
f = blen = mlen = 0; |
150 |
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151 |
do { |
do { |
152 |
receive_response(); |
receive_response(buf); |
153 |
cnt++; |
if (!f && (c = strcasestr(buf, "* SEARCH "))) { |
154 |
} while (!strcasestr(packet + cnt * SOCKET_READ_BUF, ultostr(tag, 16))); |
f = 1; |
155 |
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156 |
#ifdef DEBUG |
blen = strlen(buf); |
157 |
printf("\n%s\n", packet); |
|
158 |
#endif |
m = *mesgs = (char *) xmalloc(blen + 1); |
159 |
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c += 9; |
160 |
*mesgs = (char *) xmalloc(strlen(packet)); |
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161 |
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while (*c && (isdigit(*c) || *c == ' ')) |
162 |
m = *mesgs; |
*(m++) = *(c++); |
163 |
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*m = 0; |
164 |
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} else { |
165 |
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c = buf; |
166 |
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blen = strlen(buf); |
167 |
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mlen = strlen(*mesgs); |
168 |
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169 |
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*mesgs = (char *) xrealloc(*mesgs, mlen + blen + 1); |
170 |
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m = *mesgs + mlen; |
171 |
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172 |
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while (*c && (isdigit(*c) || *c == ' ')) |
173 |
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*(m++) = *(c++); |
174 |
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*m = 0; |
175 |
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} |
176 |
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} while (!strcasestr(buf, ultostr(tag, 16))); |
177 |
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178 |
if ((c = strcasestr(packet, "SEARCH "))) { |
return analyze_response(buf); |
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c += 7; |
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while (isdigit(*c) || *c == ' ') |
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*(m++) = *(c++); |
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} |
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*m = 0; |
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return analyze_response(); |
|
179 |
} |
} |
180 |
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181 |
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184 |
*/ |
*/ |
185 |
int fetch_response(unsigned int tag) |
int fetch_response(unsigned int tag) |
186 |
{ |
{ |
187 |
int s, i, cnt = -1; |
int sa, sb, n, i, f; |
188 |
char *pos; |
char s[6]; |
189 |
char headers[HEADERS_BUF]; |
char *b; |
190 |
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char buf[RESPONSE_BUF]; |
191 |
packet[0] = headers[0] = 0; |
char hdrs[HEADERS_BUF]; |
192 |
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193 |
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hdrs[0] = 0; |
194 |
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sa = sb = i = f = 0; |
195 |
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s[0] = 0; |
196 |
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197 |
do { |
do { |
198 |
receive_response(); |
receive_response(buf); |
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cnt++; |
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} while (!strcasestr(packet + cnt * SOCKET_READ_BUF, ultostr(tag, 16))); |
|
199 |
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200 |
#ifdef DEBUG |
b = buf; |
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printf("\n%s\n", packet); |
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#endif |
|
201 |
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202 |
pos = packet; |
while (f || (b = strchr(b, '{'))) { |
203 |
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if (f) { |
204 |
while ((pos = strchr(pos, '{'))) { |
f = 0; |
205 |
s = atoi(pos + 1); |
for (; i < HEADERS_BUF - 1 && i < sa - 2; i++) { |
206 |
pos = strchr(pos, '}'); |
if (!*b) { |
207 |
|
f = 1; |
208 |
for (i = 0; i < HEADERS_BUF - 1 && i < s - 2; i++) |
break; |
209 |
headers[i] = *(pos + 3 + i); |
} |
210 |
|
hdrs[i] = *(b++); |
211 |
headers[i] = 0; |
} |
212 |
pos += i; |
} else { |
213 |
|
if (b == buf + RESPONSE_BUF - 1) { |
214 |
if (*headers) { |
receive_response(buf); |
215 |
if (options & OPTION_HEADERS) |
b = buf; |
216 |
info("%s\n", headers); |
} |
217 |
log_info(LOG_WRITE, headers); |
sa = atoi(++b); |
218 |
} else |
|
219 |
log_info(LOG_WRITE, NULL); |
if (!(b = strchr(b, '}'))) { |
220 |
} |
receive_response(buf); |
221 |
|
if (buf != (b = strchr(buf, '}'))) { |
222 |
|
sb = atoi(buf); |
223 |
|
snprintf(s, 6, "%d%d", sa, sb); |
224 |
|
sa = atoi(s); |
225 |
|
} |
226 |
|
b += 3; |
227 |
|
} else if ((n = RESPONSE_BUF - 1 - (b - buf)) < 3) { |
228 |
|
receive_response(buf); |
229 |
|
b = buf + 3 - n; |
230 |
|
} else { |
231 |
|
b += 3; |
232 |
|
} |
233 |
|
|
234 |
|
for (i = 0; i < HEADERS_BUF - 1 && i < sa - 2; i++) { |
235 |
|
if (!*b) { |
236 |
|
f = 1; |
237 |
|
break; |
238 |
|
} |
239 |
|
hdrs[i] = *(b++); |
240 |
|
} |
241 |
|
} |
242 |
|
|
243 |
|
if (!f) { |
244 |
|
hdrs[i] = 0; |
245 |
|
|
246 |
|
if (*hdrs) { |
247 |
|
if (options & OPTION_HEADERS) |
248 |
|
info("%s\n", hdrs); |
249 |
|
log_info(LOG_WRITE, hdrs); |
250 |
|
} else { |
251 |
|
log_info(LOG_WRITE, NULL); |
252 |
|
} |
253 |
|
} else { |
254 |
|
break; |
255 |
|
} |
256 |
|
} |
257 |
|
} while (!strcasestr(buf, ultostr(tag, 16))); |
258 |
|
|
259 |
return analyze_response(); |
return analyze_response(buf); |
260 |
} |
} |
261 |
|
|
262 |
|
|
265 |
*/ |
*/ |
266 |
int copy_response(unsigned int tag) |
int copy_response(unsigned int tag) |
267 |
{ |
{ |
268 |
packet_clear(); |
char buf[RESPONSE_BUF]; |
269 |
|
|
270 |
do |
do |
271 |
receive_response(); |
receive_response(buf); |
272 |
while (!strcasestr(packet, ultostr(tag, 16))); |
while (!strcasestr(buf, ultostr(tag, 16))); |
|
|
|
|
#ifdef DEBUG |
|
|
printf("\n%s\n", packet); |
|
|
#endif |
|
273 |
|
|
274 |
if (analyze_response() == RESPONSE_NO && strcasestr(packet, "[TRYCREATE]")) |
if (analyze_response(buf) == RESPONSE_NO && strcasestr(buf, "[TRYCREATE]")) |
275 |
return RESPONSE_TRYCREATE; |
return RESPONSE_TRYCREATE; |
276 |
|
|
277 |
return RESPONSE_OK; |
return RESPONSE_OK; |
282 |
* Check if response of server to client's request was succesfully |
* Check if response of server to client's request was succesfully |
283 |
* delivered or there was some kind of error. |
* delivered or there was some kind of error. |
284 |
*/ |
*/ |
285 |
int analyze_response(void) |
int analyze_response(char *buf) |
286 |
{ |
{ |
287 |
int r = RESPONSE_OK; |
int r = RESPONSE_OK; |
288 |
regex_t creg; |
regex_t creg; |
289 |
regmatch_t match[3]; |
regmatch_t match[3]; |
290 |
const char *reg = "[[:xdigit:]]{6,6} ((OK|NO|BAD)[[:print:]]*)\r\n"; |
const char *reg = "[[:xdigit:]]{6,6} ((OK|NO|BAD)[[:print:]]*)\r\n"; |
291 |
char result[RESPONSE_BUF]; |
char result[RESULT_BUF]; |
292 |
|
|
293 |
result[0] = 0; |
result[0] = 0; |
294 |
|
|
295 |
regcomp(&creg, reg, REG_EXTENDED | REG_ICASE); |
regcomp(&creg, reg, REG_EXTENDED | REG_ICASE); |
296 |
|
|
297 |
if (!regexec(&creg, packet, 3, match, 0)) { |
if (!regexec(&creg, buf, 3, match, 0)) { |
298 |
strncat(result, packet + match[1].rm_so, |
strncat(result, buf + match[1].rm_so, |
299 |
min(match[1].rm_eo - match[1].rm_so, RESPONSE_BUF - 1)); |
min(match[1].rm_eo - match[1].rm_so, RESULT_BUF - 1)); |
300 |
|
|
301 |
if (!strncasecmp(packet + match[2].rm_so, "NO", 2)) |
if (!strncasecmp(buf + match[2].rm_so, "NO", 2)) |
302 |
r = RESPONSE_NO; |
r = RESPONSE_NO; |
303 |
else if (!strncasecmp(packet + match[2].rm_so, "BAD", 3)) |
else if (!strncasecmp(buf + match[2].rm_so, "BAD", 3)) |
304 |
r = RESPONSE_BAD; |
r = RESPONSE_BAD; |
305 |
|
|
306 |
verbose("Server response: %s\n", result); |
verbose("Server response: %s\n", result); |