00db133f |
1 | #include <stdio.h> |
2 | #include <stdlib.h> |
3 | #include <ctype.h> |
4 | |
5 | #include <time.h> |
6 | #include <assert.h> |
7 | |
8 | #include "putty.h" |
9 | |
10 | /* log session to file stuff ... */ |
11 | static FILE *lgfp = NULL; |
00db133f |
12 | static char currlogfilename[FILENAME_MAX]; |
13 | |
14 | static void xlatlognam(char *d, char *s, char *hostname, struct tm *tm); |
15 | |
16 | /* |
17 | * Log session traffic. |
18 | */ |
19 | void logtraffic(unsigned char c, int logmode) |
20 | { |
21 | if (cfg.logtype > 0) { |
22 | if (cfg.logtype == logmode) { |
23 | /* deferred open file from pgm start? */ |
24 | if (!lgfp) |
25 | logfopen(); |
26 | if (lgfp) |
27 | fputc(c, lgfp); |
28 | } |
29 | } |
30 | } |
31 | |
32 | /* |
fb89f7ff |
33 | * Log an Event Log entry (used in SSH packet logging mode). |
34 | */ |
35 | void log_eventlog(char *event) |
36 | { |
37 | if (cfg.logtype != LGTYP_PACKETS) |
38 | return; |
39 | if (!lgfp) |
40 | logfopen(); |
41 | if (lgfp) |
42 | fprintf(lgfp, "Event Log: %s\n", event); |
43 | } |
44 | |
45 | /* |
00db133f |
46 | * Log an SSH packet. |
47 | */ |
48 | void log_packet(int direction, int type, char *texttype, void *data, int len) |
49 | { |
fb89f7ff |
50 | int i, j; |
00db133f |
51 | char dumpdata[80], smalldata[5]; |
52 | |
53 | if (cfg.logtype != LGTYP_PACKETS) |
54 | return; |
55 | if (!lgfp) |
56 | logfopen(); |
57 | if (lgfp) { |
58 | fprintf(lgfp, "%s packet type %d / 0x%02x (%s)\n", |
59 | direction == PKT_INCOMING ? "Incoming" : "Outgoing", |
60 | type, type, texttype); |
61 | for (i = 0; i < len; i += 16) { |
62 | sprintf(dumpdata, " %08x%*s\n", i, 1+3*16+2+16, ""); |
63 | for (j = 0; j < 16 && i+j < len; j++) { |
64 | int c = ((unsigned char *)data)[i+j]; |
65 | sprintf(smalldata, "%02x", c); |
66 | dumpdata[10+2+3*j] = smalldata[0]; |
67 | dumpdata[10+2+3*j+1] = smalldata[1]; |
68 | dumpdata[10+1+3*16+2+j] = (isprint(c) ? c : '.'); |
69 | } |
70 | strcpy(dumpdata + 10+1+3*16+2+j, "\n"); |
71 | fputs(dumpdata, lgfp); |
72 | } |
88693305 |
73 | fflush(lgfp); |
00db133f |
74 | } |
75 | } |
76 | |
77 | /* open log file append/overwrite mode */ |
78 | void logfopen(void) |
79 | { |
80 | char buf[256]; |
81 | time_t t; |
82 | struct tm tm; |
83 | char writemod[4]; |
84 | |
fb89f7ff |
85 | /* Prevent repeat calls */ |
86 | if (lgfp) |
87 | return; |
88 | |
00db133f |
89 | if (!cfg.logtype) |
90 | return; |
91 | sprintf(writemod, "wb"); /* default to rewrite */ |
92 | |
93 | time(&t); |
94 | tm = *localtime(&t); |
95 | |
96 | /* substitute special codes in file name */ |
97 | xlatlognam(currlogfilename,cfg.logfilename,cfg.host, &tm); |
98 | |
99 | lgfp = fopen(currlogfilename, "r"); /* file already present? */ |
100 | if (lgfp) { |
101 | int i; |
102 | fclose(lgfp); |
103 | i = askappend(currlogfilename); |
104 | if (i == 1) |
105 | writemod[0] = 'a'; /* set append mode */ |
106 | else if (i == 0) { /* cancelled */ |
107 | lgfp = NULL; |
108 | cfg.logtype = 0; /* disable logging */ |
109 | return; |
110 | } |
111 | } |
112 | |
113 | lgfp = fopen(currlogfilename, writemod); |
114 | if (lgfp) { /* enter into event log */ |
fb89f7ff |
115 | /* --- write header line into log file */ |
116 | fputs("=~=~=~=~=~=~=~=~=~=~=~= PuTTY log ", lgfp); |
117 | strftime(buf, 24, "%Y.%m.%d %H:%M:%S", &tm); |
118 | fputs(buf, lgfp); |
119 | fputs(" =~=~=~=~=~=~=~=~=~=~=~=\r\n", lgfp); |
120 | |
121 | sprintf(buf, "%s session log (%s mode) to file: ", |
00db133f |
122 | (writemod[0] == 'a') ? "Appending" : "Writing new", |
123 | (cfg.logtype == LGTYP_ASCII ? "ASCII" : |
fb89f7ff |
124 | cfg.logtype == LGTYP_DEBUG ? "raw" : |
125 | cfg.logtype == LGTYP_PACKETS ? "SSH packets" : "<ukwn>")); |
00db133f |
126 | /* Make sure we do not exceed the output buffer size */ |
127 | strncat(buf, currlogfilename, 128); |
128 | buf[strlen(buf)] = '\0'; |
129 | logevent(buf); |
00db133f |
130 | } |
131 | } |
132 | |
133 | void logfclose(void) |
134 | { |
135 | if (lgfp) { |
136 | fclose(lgfp); |
137 | lgfp = NULL; |
138 | } |
139 | } |
140 | |
141 | /* |
142 | * translate format codes into time/date strings |
143 | * and insert them into log file name |
144 | * |
145 | * "&Y":YYYY "&m":MM "&d":DD "&T":hhmm "&h":<hostname> "&&":& |
146 | */ |
147 | static void xlatlognam(char *d, char *s, char *hostname, struct tm *tm) { |
148 | char buf[10], *bufp; |
149 | int size; |
00db133f |
150 | int len = FILENAME_MAX-1; |
151 | |
152 | while (*s) { |
153 | /* Let (bufp, len) be the string to append. */ |
154 | bufp = buf; /* don't usually override this */ |
155 | if (*s == '&') { |
156 | char c; |
157 | s++; |
1709795f |
158 | size = 0; |
00db133f |
159 | if (*s) switch (c = *s++, tolower(c)) { |
160 | case 'y': |
161 | size = strftime(buf, sizeof(buf), "%Y", tm); |
162 | break; |
163 | case 'm': |
164 | size = strftime(buf, sizeof(buf), "%m", tm); |
165 | break; |
166 | case 'd': |
167 | size = strftime(buf, sizeof(buf), "%d", tm); |
168 | break; |
169 | case 't': |
170 | size = strftime(buf, sizeof(buf), "%H%M%S", tm); |
171 | break; |
172 | case 'h': |
173 | bufp = hostname; |
174 | size = strlen(bufp); |
175 | break; |
176 | default: |
177 | buf[0] = '&'; |
178 | size = 1; |
179 | if (c != '&') |
180 | buf[size++] = c; |
181 | } |
182 | } else { |
183 | buf[0] = *s++; |
184 | size = 1; |
185 | } |
186 | if (size > len) |
187 | size = len; |
188 | memcpy(d, bufp, size); |
189 | d += size; |
190 | len -= size; |
191 | } |
192 | *d = '\0'; |
193 | } |