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 ... */ |
a8327734 |
11 | struct LogContext { |
12 | FILE *lgfp; |
13 | char currlogfilename[FILENAME_MAX]; |
14 | void *frontend; |
15 | }; |
00db133f |
16 | |
17 | static void xlatlognam(char *d, char *s, char *hostname, struct tm *tm); |
18 | |
19 | /* |
20 | * Log session traffic. |
21 | */ |
a8327734 |
22 | void logtraffic(void *handle, unsigned char c, int logmode) |
00db133f |
23 | { |
a8327734 |
24 | struct LogContext *ctx = (struct LogContext *)handle; |
00db133f |
25 | if (cfg.logtype > 0) { |
26 | if (cfg.logtype == logmode) { |
27 | /* deferred open file from pgm start? */ |
a8327734 |
28 | if (!ctx->lgfp) |
29 | logfopen(ctx); |
30 | if (ctx->lgfp) |
31 | fputc(c, ctx->lgfp); |
00db133f |
32 | } |
33 | } |
34 | } |
35 | |
36 | /* |
fb89f7ff |
37 | * Log an Event Log entry (used in SSH packet logging mode). |
38 | */ |
a8327734 |
39 | void log_eventlog(void *handle, char *event) |
fb89f7ff |
40 | { |
a8327734 |
41 | struct LogContext *ctx = (struct LogContext *)handle; |
fb89f7ff |
42 | if (cfg.logtype != LGTYP_PACKETS) |
43 | return; |
a8327734 |
44 | if (!ctx->lgfp) |
45 | logfopen(ctx); |
46 | if (ctx->lgfp) |
fa76f4a3 |
47 | fprintf(ctx->lgfp, "Event Log: %s\r\n", event); |
fb89f7ff |
48 | } |
49 | |
50 | /* |
00db133f |
51 | * Log an SSH packet. |
52 | */ |
a8327734 |
53 | void log_packet(void *handle, int direction, int type, |
54 | char *texttype, void *data, int len) |
00db133f |
55 | { |
a8327734 |
56 | struct LogContext *ctx = (struct LogContext *)handle; |
fb89f7ff |
57 | int i, j; |
00db133f |
58 | char dumpdata[80], smalldata[5]; |
59 | |
60 | if (cfg.logtype != LGTYP_PACKETS) |
61 | return; |
a8327734 |
62 | if (!ctx->lgfp) |
63 | logfopen(ctx); |
64 | if (ctx->lgfp) { |
fa76f4a3 |
65 | fprintf(ctx->lgfp, "%s packet type %d / 0x%02x (%s)\r\n", |
00db133f |
66 | direction == PKT_INCOMING ? "Incoming" : "Outgoing", |
67 | type, type, texttype); |
68 | for (i = 0; i < len; i += 16) { |
fa76f4a3 |
69 | sprintf(dumpdata, " %08x%*s\r\n", i, 1+3*16+2+16, ""); |
00db133f |
70 | for (j = 0; j < 16 && i+j < len; j++) { |
71 | int c = ((unsigned char *)data)[i+j]; |
72 | sprintf(smalldata, "%02x", c); |
73 | dumpdata[10+2+3*j] = smalldata[0]; |
74 | dumpdata[10+2+3*j+1] = smalldata[1]; |
75 | dumpdata[10+1+3*16+2+j] = (isprint(c) ? c : '.'); |
76 | } |
fa76f4a3 |
77 | strcpy(dumpdata + 10+1+3*16+2+j, "\r\n"); |
a8327734 |
78 | fputs(dumpdata, ctx->lgfp); |
00db133f |
79 | } |
a8327734 |
80 | fflush(ctx->lgfp); |
00db133f |
81 | } |
82 | } |
83 | |
84 | /* open log file append/overwrite mode */ |
a8327734 |
85 | void logfopen(void *handle) |
00db133f |
86 | { |
a8327734 |
87 | struct LogContext *ctx = (struct LogContext *)handle; |
00db133f |
88 | char buf[256]; |
89 | time_t t; |
90 | struct tm tm; |
91 | char writemod[4]; |
92 | |
fb89f7ff |
93 | /* Prevent repeat calls */ |
a8327734 |
94 | if (ctx->lgfp) |
fb89f7ff |
95 | return; |
96 | |
00db133f |
97 | if (!cfg.logtype) |
98 | return; |
fa76f4a3 |
99 | sprintf(writemod, "wb"); /* default to rewrite */ |
00db133f |
100 | |
101 | time(&t); |
102 | tm = *localtime(&t); |
103 | |
104 | /* substitute special codes in file name */ |
a8327734 |
105 | xlatlognam(ctx->currlogfilename, cfg.logfilename,cfg.host, &tm); |
00db133f |
106 | |
a8327734 |
107 | ctx->lgfp = fopen(ctx->currlogfilename, "r"); /* file already present? */ |
108 | if (ctx->lgfp) { |
00db133f |
109 | int i; |
a8327734 |
110 | fclose(ctx->lgfp); |
111 | i = askappend(ctx->frontend, ctx->currlogfilename); |
00db133f |
112 | if (i == 1) |
113 | writemod[0] = 'a'; /* set append mode */ |
114 | else if (i == 0) { /* cancelled */ |
a8327734 |
115 | ctx->lgfp = NULL; |
00db133f |
116 | cfg.logtype = 0; /* disable logging */ |
117 | return; |
118 | } |
119 | } |
120 | |
a8327734 |
121 | ctx->lgfp = fopen(ctx->currlogfilename, writemod); |
122 | if (ctx->lgfp) { /* enter into event log */ |
fb89f7ff |
123 | /* --- write header line into log file */ |
a8327734 |
124 | fputs("=~=~=~=~=~=~=~=~=~=~=~= PuTTY log ", ctx->lgfp); |
fb89f7ff |
125 | strftime(buf, 24, "%Y.%m.%d %H:%M:%S", &tm); |
a8327734 |
126 | fputs(buf, ctx->lgfp); |
fa76f4a3 |
127 | fputs(" =~=~=~=~=~=~=~=~=~=~=~=\r\n", ctx->lgfp); |
fb89f7ff |
128 | |
129 | sprintf(buf, "%s session log (%s mode) to file: ", |
00db133f |
130 | (writemod[0] == 'a') ? "Appending" : "Writing new", |
131 | (cfg.logtype == LGTYP_ASCII ? "ASCII" : |
fb89f7ff |
132 | cfg.logtype == LGTYP_DEBUG ? "raw" : |
133 | cfg.logtype == LGTYP_PACKETS ? "SSH packets" : "<ukwn>")); |
00db133f |
134 | /* Make sure we do not exceed the output buffer size */ |
a8327734 |
135 | strncat(buf, ctx->currlogfilename, 128); |
00db133f |
136 | buf[strlen(buf)] = '\0'; |
a8327734 |
137 | logevent(ctx->frontend, buf); |
00db133f |
138 | } |
139 | } |
140 | |
a8327734 |
141 | void logfclose(void *handle) |
00db133f |
142 | { |
a8327734 |
143 | struct LogContext *ctx = (struct LogContext *)handle; |
144 | if (ctx->lgfp) { |
145 | fclose(ctx->lgfp); |
146 | ctx->lgfp = NULL; |
00db133f |
147 | } |
148 | } |
149 | |
a8327734 |
150 | void *log_init(void *frontend) |
151 | { |
152 | struct LogContext *ctx = smalloc(sizeof(struct LogContext)); |
153 | ctx->lgfp = NULL; |
154 | ctx->frontend = frontend; |
155 | return ctx; |
156 | } |
157 | |
00db133f |
158 | /* |
159 | * translate format codes into time/date strings |
160 | * and insert them into log file name |
161 | * |
162 | * "&Y":YYYY "&m":MM "&d":DD "&T":hhmm "&h":<hostname> "&&":& |
163 | */ |
164 | static void xlatlognam(char *d, char *s, char *hostname, struct tm *tm) { |
165 | char buf[10], *bufp; |
166 | int size; |
00db133f |
167 | int len = FILENAME_MAX-1; |
168 | |
169 | while (*s) { |
170 | /* Let (bufp, len) be the string to append. */ |
171 | bufp = buf; /* don't usually override this */ |
172 | if (*s == '&') { |
173 | char c; |
174 | s++; |
1709795f |
175 | size = 0; |
00db133f |
176 | if (*s) switch (c = *s++, tolower(c)) { |
177 | case 'y': |
178 | size = strftime(buf, sizeof(buf), "%Y", tm); |
179 | break; |
180 | case 'm': |
181 | size = strftime(buf, sizeof(buf), "%m", tm); |
182 | break; |
183 | case 'd': |
184 | size = strftime(buf, sizeof(buf), "%d", tm); |
185 | break; |
186 | case 't': |
187 | size = strftime(buf, sizeof(buf), "%H%M%S", tm); |
188 | break; |
189 | case 'h': |
190 | bufp = hostname; |
191 | size = strlen(bufp); |
192 | break; |
193 | default: |
194 | buf[0] = '&'; |
195 | size = 1; |
196 | if (c != '&') |
197 | buf[size++] = c; |
198 | } |
199 | } else { |
200 | buf[0] = *s++; |
201 | size = 1; |
202 | } |
203 | if (size > len) |
204 | size = len; |
205 | memcpy(d, bufp, size); |
206 | d += size; |
207 | len -= size; |
208 | } |
209 | *d = '\0'; |
210 | } |