/[imapfilter]/imapfilter/response.c
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Contents of /imapfilter/response.c

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Revision 1.1 - (show annotations)
Mon Sep 10 23:43:29 2001 UTC (22 years, 6 months ago) by lefcha
Branch: MAIN
File MIME type: text/plain
New imapfilter.

1 #include <stdio.h>
2 #include <unistd.h>
3 #include <stdlib.h>
4 #include <string.h>
5 #include <fcntl.h>
6 #include <sys/time.h>
7 #include <sys/types.h>
8 #include <regex.h>
9
10
11 #include "config.h"
12 #include "imapfilter.h"
13
14
15 extern int sock;
16 extern unsigned int options;
17
18
19 /*
20 * Reads data the server sent.
21 */
22 int receive_response(char *buf)
23 {
24 int flags;
25 fd_set fds;
26 struct timeval tv;
27
28 memset(buf, 0, RESPONSE_BUF);
29
30 tv.tv_sec = 10;
31 tv.tv_usec = 0;
32
33 flags = fcntl(sock, F_GETFL, 0);
34 fcntl(sock, F_SETFL, flags | O_NONBLOCK);
35
36 FD_ZERO(&fds);
37 FD_SET(sock, &fds);
38
39 if ((select(sock + 1, &fds, NULL, NULL, &tv) > 0)
40 && FD_ISSET(sock, &fds)) {
41 if (read(sock, buf, RESPONSE_BUF - 1) != -1) {
42 #ifdef DEBUG
43 printf("\n%s\n", buf);
44 #endif
45 fcntl(sock, F_SETFL, flags);
46
47 return analyze_response(buf);
48 }
49 }
50
51 fcntl(sock, F_SETFL, flags);
52
53 return 2;
54 }
55
56
57 /*
58 * Get server response to client's request.
59 */
60 int server_response(void)
61 {
62 char buf[RESPONSE_BUF];
63
64 return receive_response(buf);
65 }
66
67
68 /*
69 * Processes the data that server sent due to IMAP STATUS client request.
70 */
71 int status_response(void)
72 {
73 int r;
74 char buf[RESPONSE_BUF];
75 unsigned int exist, recent, unseen;
76
77 exist = recent = unseen = 0;
78
79 do
80 r = receive_response(buf);
81 while (!strstr(buf, "STATUS"));
82
83 sscanf(buf, "* STATUS %*s (MESSAGES %d RECENT %d UNSEEN %d)", &exist,
84 &recent, &unseen);
85
86 info("%d messages exist, %d recent, %d unseen.\n", exist, recent,
87 unseen);
88
89 return r;
90 }
91
92
93 /*
94 * Processes the data that server sent due to IMAP SEARCH client request.
95 */
96 int search_response(char *mesgs)
97 {
98 int r;
99 char buf[RESPONSE_BUF];
100
101 do
102 r = receive_response(buf);
103 while (!strstr(buf, "SEARCH"));
104
105 sscanf(buf, "* SEARCH %511[0-9 ]", mesgs);
106
107 return r;
108 }
109
110
111 /*
112 * Processes the data that server sent due to IMAP FETCH client request.
113 */
114 int fetch_response(char *headers)
115 {
116 int r, s, i;
117 char buf[RESPONSE_BUF];
118 char *pos;
119
120 do
121 r = receive_response(buf);
122 while (!strstr(buf, "FETCH"));
123
124 pos = strchr(buf, '{');
125
126 s = atoi(pos + 1);
127
128 pos = strchr(pos, '}');
129
130 for (i = 0; i < HEADERS_BUF && i < s - 2; i++)
131 headers[i] = *(pos + 3 + i);
132
133 headers[i] = 0;
134
135 return r;
136 }
137
138
139 /*
140 * Processes the data that server sent due to IMAP COPY client request.
141 */
142 int copy_response(void)
143 {
144 int r;
145 char buf[RESPONSE_BUF];
146
147 do
148 r = receive_response(buf);
149 while (!strstr(buf, "COPY"));
150
151 if (r == 1 && strstr(buf, "[TRYCREATE]"))
152 return 1;
153
154 return 0;
155 }
156
157
158 /*
159 * Checks if response of server to client's request was succesfully
160 * delivered or there was some kind of error.
161 */
162 int analyze_response(char *buf)
163 {
164 int s, r = 0;
165 regex_t creg;
166 regmatch_t match[3];
167 const char *reg = "[[:xdigit:]]{6,6} ((OK|NO|BAD) [[:print:]]*)\r\n";
168 char result[RESULT_BUF];
169
170 regcomp(&creg, reg, REG_EXTENDED);
171
172 if (!regexec(&creg, buf, 3, match, 0)) {
173 s = min(match[1].rm_eo - match[1].rm_so, RESULT_BUF - 1);
174 strncpy(result, buf + match[1].rm_so, s);
175 result[s] = 0;
176
177 if (!strncmp(buf + match[2].rm_so, "NO", 2))
178 r = 1;
179 else if (!strncmp(buf + match[2].rm_so, "BAD", 3))
180 r = -1;
181
182 verbose("Server response: %s\n", result);
183 }
184
185 regfree(&creg);
186
187 return r;
188 }

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