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1 | #include <windows.h> |
2 | |
3 | #include <stdio.h> |
4 | #include <stdlib.h> |
5 | #include <ctype.h> |
6 | |
7 | #include <time.h> |
8 | #include <assert.h> |
9 | |
10 | #include "putty.h" |
11 | |
12 | /* log session to file stuff ... */ |
13 | static FILE *lgfp = NULL; |
14 | static char timdatbuf[20]; |
15 | static char currlogfilename[FILENAME_MAX]; |
16 | |
17 | static void xlatlognam(char *d, char *s, char *hostname, struct tm *tm); |
18 | |
19 | /* |
20 | * Log session traffic. |
21 | */ |
22 | void logtraffic(unsigned char c, int logmode) |
23 | { |
24 | if (cfg.logtype > 0) { |
25 | if (cfg.logtype == logmode) { |
26 | /* deferred open file from pgm start? */ |
27 | if (!lgfp) |
28 | logfopen(); |
29 | if (lgfp) |
30 | fputc(c, lgfp); |
31 | } |
32 | } |
33 | } |
34 | |
35 | /* |
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36 | * Log an Event Log entry (used in SSH packet logging mode). |
37 | */ |
38 | void log_eventlog(char *event) |
39 | { |
40 | if (cfg.logtype != LGTYP_PACKETS) |
41 | return; |
42 | if (!lgfp) |
43 | logfopen(); |
44 | if (lgfp) |
45 | fprintf(lgfp, "Event Log: %s\n", event); |
46 | } |
47 | |
48 | /* |
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49 | * Log an SSH packet. |
50 | */ |
51 | void log_packet(int direction, int type, char *texttype, void *data, int len) |
52 | { |
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53 | int i, j; |
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54 | char dumpdata[80], smalldata[5]; |
55 | |
56 | if (cfg.logtype != LGTYP_PACKETS) |
57 | return; |
58 | if (!lgfp) |
59 | logfopen(); |
60 | if (lgfp) { |
61 | fprintf(lgfp, "%s packet type %d / 0x%02x (%s)\n", |
62 | direction == PKT_INCOMING ? "Incoming" : "Outgoing", |
63 | type, type, texttype); |
64 | for (i = 0; i < len; i += 16) { |
65 | sprintf(dumpdata, " %08x%*s\n", i, 1+3*16+2+16, ""); |
66 | for (j = 0; j < 16 && i+j < len; j++) { |
67 | int c = ((unsigned char *)data)[i+j]; |
68 | sprintf(smalldata, "%02x", c); |
69 | dumpdata[10+2+3*j] = smalldata[0]; |
70 | dumpdata[10+2+3*j+1] = smalldata[1]; |
71 | dumpdata[10+1+3*16+2+j] = (isprint(c) ? c : '.'); |
72 | } |
73 | strcpy(dumpdata + 10+1+3*16+2+j, "\n"); |
74 | fputs(dumpdata, lgfp); |
75 | } |
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76 | fflush(lgfp); |
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77 | } |
78 | } |
79 | |
80 | /* open log file append/overwrite mode */ |
81 | void logfopen(void) |
82 | { |
83 | char buf[256]; |
84 | time_t t; |
85 | struct tm tm; |
86 | char writemod[4]; |
87 | |
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88 | /* Prevent repeat calls */ |
89 | if (lgfp) |
90 | return; |
91 | |
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92 | if (!cfg.logtype) |
93 | return; |
94 | sprintf(writemod, "wb"); /* default to rewrite */ |
95 | |
96 | time(&t); |
97 | tm = *localtime(&t); |
98 | |
99 | /* substitute special codes in file name */ |
100 | xlatlognam(currlogfilename,cfg.logfilename,cfg.host, &tm); |
101 | |
102 | lgfp = fopen(currlogfilename, "r"); /* file already present? */ |
103 | if (lgfp) { |
104 | int i; |
105 | fclose(lgfp); |
106 | i = askappend(currlogfilename); |
107 | if (i == 1) |
108 | writemod[0] = 'a'; /* set append mode */ |
109 | else if (i == 0) { /* cancelled */ |
110 | lgfp = NULL; |
111 | cfg.logtype = 0; /* disable logging */ |
112 | return; |
113 | } |
114 | } |
115 | |
116 | lgfp = fopen(currlogfilename, writemod); |
117 | if (lgfp) { /* enter into event log */ |
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118 | /* --- write header line into log file */ |
119 | fputs("=~=~=~=~=~=~=~=~=~=~=~= PuTTY log ", lgfp); |
120 | strftime(buf, 24, "%Y.%m.%d %H:%M:%S", &tm); |
121 | fputs(buf, lgfp); |
122 | fputs(" =~=~=~=~=~=~=~=~=~=~=~=\r\n", lgfp); |
123 | |
124 | sprintf(buf, "%s session log (%s mode) to file: ", |
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125 | (writemod[0] == 'a') ? "Appending" : "Writing new", |
126 | (cfg.logtype == LGTYP_ASCII ? "ASCII" : |
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127 | cfg.logtype == LGTYP_DEBUG ? "raw" : |
128 | cfg.logtype == LGTYP_PACKETS ? "SSH packets" : "<ukwn>")); |
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129 | /* Make sure we do not exceed the output buffer size */ |
130 | strncat(buf, currlogfilename, 128); |
131 | buf[strlen(buf)] = '\0'; |
132 | logevent(buf); |
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133 | } |
134 | } |
135 | |
136 | void logfclose(void) |
137 | { |
138 | if (lgfp) { |
139 | fclose(lgfp); |
140 | lgfp = NULL; |
141 | } |
142 | } |
143 | |
144 | /* |
145 | * translate format codes into time/date strings |
146 | * and insert them into log file name |
147 | * |
148 | * "&Y":YYYY "&m":MM "&d":DD "&T":hhmm "&h":<hostname> "&&":& |
149 | */ |
150 | static void xlatlognam(char *d, char *s, char *hostname, struct tm *tm) { |
151 | char buf[10], *bufp; |
152 | int size; |
153 | char *ds = d; /* save start pos. */ |
154 | int len = FILENAME_MAX-1; |
155 | |
156 | while (*s) { |
157 | /* Let (bufp, len) be the string to append. */ |
158 | bufp = buf; /* don't usually override this */ |
159 | if (*s == '&') { |
160 | char c; |
161 | s++; |
162 | if (*s) switch (c = *s++, tolower(c)) { |
163 | case 'y': |
164 | size = strftime(buf, sizeof(buf), "%Y", tm); |
165 | break; |
166 | case 'm': |
167 | size = strftime(buf, sizeof(buf), "%m", tm); |
168 | break; |
169 | case 'd': |
170 | size = strftime(buf, sizeof(buf), "%d", tm); |
171 | break; |
172 | case 't': |
173 | size = strftime(buf, sizeof(buf), "%H%M%S", tm); |
174 | break; |
175 | case 'h': |
176 | bufp = hostname; |
177 | size = strlen(bufp); |
178 | break; |
179 | default: |
180 | buf[0] = '&'; |
181 | size = 1; |
182 | if (c != '&') |
183 | buf[size++] = c; |
184 | } |
185 | } else { |
186 | buf[0] = *s++; |
187 | size = 1; |
188 | } |
189 | if (size > len) |
190 | size = len; |
191 | memcpy(d, bufp, size); |
192 | d += size; |
193 | len -= size; |
194 | } |
195 | *d = '\0'; |
196 | } |