### Bug Summary

File: | extcap/sshdump.c
Warning: | line 280, column 9 Opened stream never closed. Potential resource leak

### Annotated Source Code

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clang -cc1 -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name sshdump.c -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 2 -pic-is-pie -fno-delete-null-pointer-checks -mframe-pointer=all -relaxed-aliasing -fmath-errno -ffp-contract=on -fno-rounding-math -ffloat16-excess-precision=fast -fbfloat16-excess-precision=fast -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fdebug-compilation-dir=/builds/wireshark/wireshark/build -fcoverage-compilation-dir=/builds/wireshark/wireshark/build -resource-dir /usr/lib/llvm-21/lib/clang/21 -isystem /usr/include/glib-2.0 -isystem /usr/lib/x86_64-linux-gnu/glib-2.0/include -D G_DISABLE_DEPRECATED -D G_DISABLE_SINGLE_INCLUDES -D WS_DEBUG -D WS_DEBUG_UTF_8 -I /builds/wireshark/wireshark/build -I /builds/wireshark/wireshark -I /builds/wireshark/wireshark/include -D _GLIBCXX_ASSERTIONS -internal-isystem /usr/lib/llvm-21/lib/clang/21/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/14/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -fmacro-prefix-map=/builds/wireshark/wireshark/= -fmacro-prefix-map=/builds/wireshark/wireshark/build/= -fmacro-prefix-map=../= -Wno-format-nonliteral -std=gnu11 -ferror-limit 19 -fvisibility=hidden -fwrapv -fwrapv-pointer -fstrict-flex-arrays=3 -stack-protector 2 -fstack-clash-protection -fcf-protection=full -fgnuc-version=4.2.1 -fskip-odr-check-in-gmf -fexceptions -fcolor-diagnostics -analyzer-output=html -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /builds/wireshark/wireshark/sbout/2026-01-19-100339-3603-1 -x c /builds/wireshark/wireshark/extcap/sshdump.c

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1 | /* sshdump.c
2 | * sshdump is extcap tool used to capture data using a remote ssh host
3 | *
4 | * Copyright 2015, Dario Lombardo
5 | *
6 | * Wireshark - Network traffic analyzer
7 | * By Gerald Combs <gerald@wireshark.org>
8 | * Copyright 1998 Gerald Combs
9 | *
10 | * SPDX-License-Identifier: GPL-2.0-or-later
11 | */
12 |
13 | #include "config.h"
14 | #define WS_LOG_DOMAIN"sshdump" "sshdump"
15 |
16 | #include <extcap/extcap-base.h>
17 | #include <extcap/ssh-base.h>
18 | #include <wsutil/interface.h>
19 | #include <wsutil/file_util.h>
20 | #include <wsutil/strtoi.h>
21 | #include <wsutil/filesystem.h>
22 | #include <wsutil/privileges.h>
23 | #include <wsutil/please_report_bug.h>
24 | #include <wsutil/wslog.h>
25 | #include <app/application_flavor.h>
26 |
27 | #include <errno(*__errno_location ()).h>
28 | #include <string.h>
29 | #include <fcntl.h>
30 |
31 | #include <cli_main.h>
32 |
33 | static char* sshdump_extcap_interface;
34 | #define DEFAULT_SSHDUMP_EXTCAP_INTERFACE"sshdump" "sshdump"
35 |
36 | #define SSHDUMP_VERSION_MAJOR"1" "1"
37 | #define SSHDUMP_VERSION_MINOR"2" "2"
38 | #define SSHDUMP_VERSION_RELEASE"0" "0"
39 |
40 | #define SSH_READ_BLOCK_SIZE256 256
41 |
42 | enum {
43 | EXTCAP_BASE_OPTIONS_ENUMEXTCAP_OPT_LIST_INTERFACES, EXTCAP_OPT_VERSION, EXTCAP_OPT_LIST_DLTS , EXTCAP_OPT_INTERFACE, EXTCAP_OPT_CONFIG, EXTCAP_OPT_CONFIG_OPTION_NAME , EXTCAP_OPT_CONFIG_OPTION_VALUE, EXTCAP_OPT_CLEANUP_POSTKILL , EXTCAP_OPT_CAPTURE, EXTCAP_OPT_CAPTURE_FILTER, EXTCAP_OPT_FIFO , EXTCAP_OPT_LOG_LEVEL, EXTCAP_OPT_LOG_FILE,
44 | OPT_HELP,
45 | OPT_VERSION,
46 | OPT_REMOTE_HOST,
47 | OPT_REMOTE_PORT,
48 | OPT_REMOTE_USERNAME,
49 | OPT_REMOTE_PASSWORD,
50 | OPT_REMOTE_INTERFACE,
51 | OPT_REMOTE_CAPTURE_COMMAND_SELECT,
52 | OPT_REMOTE_CAPTURE_COMMAND,
53 | OPT_REMOTE_FILTER,
54 | OPT_SSHKEY,
55 | OPT_SSHKEY_PASSPHRASE,
56 | OPT_PROXYCOMMAND,
57 | OPT_SSH_SHA1,
58 | OPT_REMOTE_COUNT,
59 | OPT_REMOTE_SUDO, // Deprecated
60 | OPT_REMOTE_PRIV,
61 | OPT_REMOTE_PRIV_USER,
62 | OPT_REMOTE_NOPROM
63 | };
64 |
65 | static const struct ws_option longopts[] = {
66 | EXTCAP_BASE_OPTIONS{ "extcap-interfaces", 0, ((void*)0), EXTCAP_OPT_LIST_INTERFACES }, { "extcap-version", 2, ((void*)0), EXTCAP_OPT_VERSION}, { "extcap-dlts" , 0, ((void*)0), EXTCAP_OPT_LIST_DLTS}, { "extcap-interface", 1, ((void*)0), EXTCAP_OPT_INTERFACE}, { "extcap-config", 0, ( (void*)0), EXTCAP_OPT_CONFIG}, { "extcap-config-option-name", 1, ((void*)0), EXTCAP_OPT_CONFIG_OPTION_NAME}, { "extcap-config-option-value" , 1, ((void*)0), EXTCAP_OPT_CONFIG_OPTION_VALUE }, { "extcap-cleanup-postkill" , 0, ((void*)0), EXTCAP_OPT_CLEANUP_POSTKILL }, { "capture", 0 , ((void*)0), EXTCAP_OPT_CAPTURE}, { "extcap-capture-filter", 1, ((void*)0), EXTCAP_OPT_CAPTURE_FILTER}, { "fifo", 1, ((void *)0), EXTCAP_OPT_FIFO}, { "log-level", 1, ((void*)0), EXTCAP_OPT_LOG_LEVEL }, { "log-file", 1, ((void*)0), EXTCAP_OPT_LOG_FILE},
67 | { "help", ws_no_argument0, NULL((void*)0), OPT_HELP},
68 | { "version", ws_no_argument0, NULL((void*)0), OPT_VERSION},
69 | SSH_BASE_PACKET_OPTIONS{ "remote-host", 1, ((void*)0), OPT_REMOTE_HOST}, { "remote-port" , 1, ((void*)0), OPT_REMOTE_PORT}, { "remote-username", 1, (( void*)0), OPT_REMOTE_USERNAME}, { "remote-password", 1, ((void *)0), OPT_REMOTE_PASSWORD}, { "remote-count", 1, ((void*)0), OPT_REMOTE_COUNT }, { "sshkey", 1, ((void*)0), OPT_SSHKEY}, { "sshkey-passphrase" , 1, ((void*)0), OPT_SSHKEY_PASSPHRASE}, { "proxycommand", 1, ((void*)0), OPT_PROXYCOMMAND}, { "ssh-sha1", 0, ((void*)0), OPT_SSH_SHA1 }, { "remote-interface", 1, ((void*)0), OPT_REMOTE_INTERFACE} , { "remote-filter", 1, ((void*)0), OPT_REMOTE_FILTER},
70 | { "remote-capture-command-select", ws_required_argument1, NULL((void*)0), OPT_REMOTE_CAPTURE_COMMAND_SELECT},
71 | { "remote-capture-command", ws_required_argument1, NULL((void*)0), OPT_REMOTE_CAPTURE_COMMAND},
72 | { "remote-sudo", ws_no_argument0, NULL((void*)0), OPT_REMOTE_SUDO }, // Deprecated
73 | { "remote-priv", ws_required_argument1, NULL((void*)0), OPT_REMOTE_PRIV },
74 | { "remote-priv-user", ws_required_argument1, NULL((void*)0), OPT_REMOTE_PRIV_USER },
75 | { "remote-noprom", ws_no_argument0, NULL((void*)0), OPT_REMOTE_NOPROM },
76 | { 0, 0, 0, 0}
77 | };
78 |
79 | static char* interfaces_list_to_filter(GSList* if_list, unsigned int remote_port);
80 |
81 | static int ssh_loop_read(ssh_channel channel, FILE* fp)
82 | {
83 | int nbytes;
84 | int ret = EXIT_SUCCESS0;
85 | char buffer[SSH_READ_BLOCK_SIZE256];
86 |
87 | /* read from stdin until data are available */
88 | while (ssh_channel_is_open(channel) && !ssh_channel_is_eof(channel)) {
89 | nbytes = ssh_channel_read(channel, buffer, SSH_READ_BLOCK_SIZE256, 0);
90 | if (nbytes < 0) {
91 | ws_warning("Error reading from channel")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 91, __func__, "Error reading from channel"); } } while (0);
92 | goto end;
93 | }
94 | if (nbytes == 0) {
95 | break;
96 | }
97 | if (fwrite(buffer, 1, nbytes, fp) != (unsigned)nbytes) {
98 | ws_warning("Error writing to fifo")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 98, __func__, "Error writing to fifo"); } } while (0);
99 | ret = EXIT_FAILURE1;
100 | goto end;
101 | }
102 | fflush(fp);
103 | }
104 |
105 | /* read loop finished... maybe something wrong happened. Read from stderr */
106 | while (ssh_channel_is_open(channel) && !ssh_channel_is_eof(channel)) {
107 | nbytes = ssh_channel_read(channel, buffer, SSH_READ_BLOCK_SIZE256, 1);
108 | if (nbytes < 0) {
109 | ws_warning("Error reading from channel")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 109, __func__, "Error reading from channel"); } } while (0);
110 | goto end;
111 | }
112 | if (fwrite(buffer, 1, nbytes, stderrstderr) != (unsigned)nbytes) {
113 | ws_warning("Error writing to stderr")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 113, __func__, "Error writing to stderr"); } } while (0);
114 | break;
115 | }
116 | }
117 |
118 | end:
119 | if (ssh_channel_send_eof(channel) != SSH_OK0) {
120 | ws_warning("Error sending EOF in ssh channel")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 120, __func__, "Error sending EOF in ssh channel"); } } while (0);
121 | ret = EXIT_FAILURE1;
122 | }
123 | return ret;
124 | }
125 |
126 | static char* local_interfaces_to_filter(const uint16_t remote_port)
127 | {
128 | GSList* interfaces = local_interfaces_to_list();
129 | char* filter = interfaces_list_to_filter(interfaces, remote_port);
130 | g_slist_free_full(interfaces, g_free);
131 | return filter;
132 | }
133 |
134 | static ssh_channel run_ssh_command(ssh_session sshs, const char* capture_command_select,
135 | const char* capture_command, const char* privilege, bool_Bool noprom,
136 | const char* iface, const char* cfilter, const uint32_t count)
137 | {
138 | char* cmdline = NULL((void*)0);
139 | ssh_channel channel;
140 | char** ifaces_array = NULL((void*)0);
141 | int ifaces_array_num = 0;
142 | GString *ifaces_string;
143 | char *ifaces = NULL((void*)0);
144 | char* quoted_iface = NULL((void*)0);
145 | char* quoted_filter = NULL((void*)0);
146 | char* count_str = NULL((void*)0);
147 | unsigned int remote_port = 22;
148 |
149 | channel = ssh_channel_new(sshs);
150 | if (!channel) {
151 | ws_warning("Can't create channel")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 151, __func__, "Can't create channel"); } } while (0);
152 | return NULL((void*)0);
153 | }
154 |
155 | if (ssh_channel_open_session(channel) != SSH_OK0) {
156 | ws_warning("Can't open session")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 156, __func__, "Can't open session"); } } while (0);
157 | ssh_channel_free(channel);
158 | return NULL((void*)0);
159 | }
160 |
161 | ssh_options_get_port(sshs, &remote_port);
162 |
163 | if (capture_command_select == NULL((void*)0) || !g_strcmp0(capture_command_select, "other")) {
164 | if (capture_command && *capture_command) {
165 | cmdline = g_strdup(capture_command)g_strdup_inline (capture_command);
166 | ws_debug("Remote capture command has disabled other options")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_DEBUG, "extcap/sshdump.c" , 166, __func__, "Remote capture command has disabled other options" ); } } while (0);
167 | } else {
168 | capture_command_select = "tcpdump";
169 | }
170 | }
171 |
172 | /* escape parameters to go save with the shell */
173 | if (!g_strcmp0(capture_command_select, "tcpdump")) {
174 | quoted_iface = iface ? g_shell_quote(iface) : NULL((void*)0);
175 | quoted_filter = g_shell_quote(cfilter ? cfilter : "");
176 | if (count > 0)
177 | count_str = ws_strdup_printf("-c %u", count)wmem_strdup_printf(((void*)0), "-c %u", count);
178 |
179 | cmdline = ws_strdup_printf("%s tcpdump -U %s%s %s -w - %s %s",wmem_strdup_printf(((void*)0), "%s tcpdump -U %s%s %s -w - %s %s" , privilege, quoted_iface ? "-i " : "", quoted_iface ? quoted_iface : "", noprom ? "-p" : "", count_str ? count_str : "", quoted_filter )
180 | privilege,wmem_strdup_printf(((void*)0), "%s tcpdump -U %s%s %s -w - %s %s" , privilege, quoted_iface ? "-i " : "", quoted_iface ? quoted_iface : "", noprom ? "-p" : "", count_str ? count_str : "", quoted_filter )
181 | quoted_iface ? "-i " : "",wmem_strdup_printf(((void*)0), "%s tcpdump -U %s%s %s -w - %s %s" , privilege, quoted_iface ? "-i " : "", quoted_iface ? quoted_iface : "", noprom ? "-p" : "", count_str ? count_str : "", quoted_filter )
182 | quoted_iface ? quoted_iface : "",wmem_strdup_printf(((void*)0), "%s tcpdump -U %s%s %s -w - %s %s" , privilege, quoted_iface ? "-i " : "", quoted_iface ? quoted_iface : "", noprom ? "-p" : "", count_str ? count_str : "", quoted_filter )
183 | noprom ? "-p" : "",wmem_strdup_printf(((void*)0), "%s tcpdump -U %s%s %s -w - %s %s" , privilege, quoted_iface ? "-i " : "", quoted_iface ? quoted_iface : "", noprom ? "-p" : "", count_str ? count_str : "", quoted_filter )
184 | count_str ? count_str : "",wmem_strdup_printf(((void*)0), "%s tcpdump -U %s%s %s -w - %s %s" , privilege, quoted_iface ? "-i " : "", quoted_iface ? quoted_iface : "", noprom ? "-p" : "", count_str ? count_str : "", quoted_filter )
185 | quoted_filter)wmem_strdup_printf(((void*)0), "%s tcpdump -U %s%s %s -w - %s %s" , privilege, quoted_iface ? "-i " : "", quoted_iface ? quoted_iface : "", noprom ? "-p" : "", count_str ? count_str : "", quoted_filter );
186 | } else if (!g_strcmp0(capture_command_select, "dumpcap")) {
187 | if (iface) {
188 | ifaces_array = g_strsplit(iface, " ", -1);
189 | ifaces_string = g_string_new(NULL((void*)0));
190 | while (ifaces_array[ifaces_array_num])
191 | {
192 | quoted_iface = g_shell_quote(ifaces_array[ifaces_array_num]);
193 | g_string_append_printf(ifaces_string, "-i %s ", quoted_iface);
194 | ifaces_array_num++;
195 | }
196 | ifaces = g_string_free(ifaces_string, FALSE)(__builtin_constant_p ((0)) ? (((0)) ? (g_string_free) ((ifaces_string ), ((0))) : g_string_free_and_steal (ifaces_string)) : (g_string_free ) ((ifaces_string), ((0))));
197 | }
198 | quoted_filter = g_shell_quote(cfilter ? cfilter : "");
199 | if (count > 0)
200 | count_str = ws_strdup_printf("-c %u", count)wmem_strdup_printf(((void*)0), "-c %u", count);
201 |
202 | cmdline = ws_strdup_printf("%s dumpcap %s %s -w - %s -f %s",wmem_strdup_printf(((void*)0), "%s dumpcap %s %s -w - %s -f %s" , privilege, noprom ? "-p" : "", ifaces ? ifaces : "", count_str ? count_str : "", quoted_filter)
203 | privilege,wmem_strdup_printf(((void*)0), "%s dumpcap %s %s -w - %s -f %s" , privilege, noprom ? "-p" : "", ifaces ? ifaces : "", count_str ? count_str : "", quoted_filter)
204 | noprom ? "-p" : "",wmem_strdup_printf(((void*)0), "%s dumpcap %s %s -w - %s -f %s" , privilege, noprom ? "-p" : "", ifaces ? ifaces : "", count_str ? count_str : "", quoted_filter)
205 | ifaces ? ifaces : "",wmem_strdup_printf(((void*)0), "%s dumpcap %s %s -w - %s -f %s" , privilege, noprom ? "-p" : "", ifaces ? ifaces : "", count_str ? count_str : "", quoted_filter)
206 | count_str ? count_str : "",wmem_strdup_printf(((void*)0), "%s dumpcap %s %s -w - %s -f %s" , privilege, noprom ? "-p" : "", ifaces ? ifaces : "", count_str ? count_str : "", quoted_filter)
207 | quoted_filter)wmem_strdup_printf(((void*)0), "%s dumpcap %s %s -w - %s -f %s" , privilege, noprom ? "-p" : "", ifaces ? ifaces : "", count_str ? count_str : "", quoted_filter);
208 |
209 | g_free(ifaces);
210 | g_strfreev(ifaces_array);
211 | }
212 |
213 | ws_debug("Running: %s", cmdline)do { if (1) { ws_log_full("sshdump", LOG_LEVEL_DEBUG, "extcap/sshdump.c" , 213, __func__, "Running: %s", cmdline); } } while (0);
214 | if (ssh_channel_request_exec(channel, cmdline) != SSH_OK0) {
215 | ws_warning("Can't request exec")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 215, __func__, "Can't request exec"); } } while (0);
216 | ssh_channel_close(channel);
217 | ssh_channel_free(channel);
218 | channel = NULL((void*)0);
219 | }
220 |
221 | g_free(quoted_iface);
222 | g_free(quoted_filter);
223 | g_free(cmdline);
224 | g_free(count_str);
225 |
226 | return channel;
227 | }
228 |
229 | static int ssh_open_remote_connection(const ssh_params_t* params, const char* iface, const char* cfilter,
230 | const char* capture_command_select, const char* capture_command, const char* privilege,
231 | bool_Bool noprom, const uint32_t count, const char* fifo)
232 | {
233 | ssh_session sshs = NULL((void*)0);
234 | ssh_channel channel = NULL((void*)0);
235 | FILE* fp = stdoutstdout;
236 | int ret = EXIT_FAILURE1;
237 | char* err_info = NULL((void*)0);
238 |
239 | if (g_strcmp0(fifo, "-")) {
30 | ← | Assuming the condition is true | →
31 | ← | Taking true branch | →
240 | /* Open or create the output file */
241 | fp = fopen(fifo, "wb");
32 | ← | Stream opened here | →
33 | ← | Assuming that 'fopen' is successful | →
242 | if (fp
33.1 | 'fp' is not equal to NULL
== NULL((void*)0)) {
34 | ← | Taking false branch | →
243 | ws_warning("Error creating output file: %s (%s)", fifo, g_strerror(errno))do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 243, __func__, "Error creating output file: %s (%s)", fifo, g_strerror((*__errno_location ()))); } } while (0);
244 | return EXIT_FAILURE1;
245 | }
246 | }
247 |
248 | sshs = create_ssh_connection(params, &err_info);
249 |
250 | if (!sshs) {
35 | ← | Assuming 'sshs' is null | →
36 | ← | Taking true branch | →
251 | ws_warning("Error creating connection.")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 251, __func__, "Error creating connection."); } } while (0);
37 | ← | Taking true branch | →
38 | ← | Loop condition is false. Exiting loop | →
252 | goto cleanup;
39 | ← | Control jumps to line 271 | →
253 | }
254 |
255 | channel = run_ssh_command(sshs, capture_command_select, capture_command, privilege, noprom, iface, cfilter, count);
256 |
257 | if (!channel) {
258 | ws_warning("Can't run ssh command.")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 258, __func__, "Can't run ssh command."); } } while (0);
259 | goto cleanup;
260 | }
261 |
262 | /* read from channel and write into fp */
263 | if (ssh_loop_read(channel, fp) != EXIT_SUCCESS0) {
264 | ws_warning("Error in read loop.")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 264, __func__, "Error in read loop."); } } while (0);
265 | ret = EXIT_FAILURE1;
266 | goto cleanup;
267 | }
268 |
269 | ret = EXIT_SUCCESS0;
270 | cleanup:
271 | if (err_info)
40 | ← | Assuming 'err_info' is null | →
41 | ← | Taking false branch | →
272 | ws_warning("%s", err_info)do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 272, __func__, "%s", err_info); } } while (0);
273 | g_free(err_info);
274 |
275 | /* clean up and exit */
276 | ssh_cleanup(&sshs, &channel);
277 |
278 | if (g_strcmp0(fifo, "-"))
42 | ← | Assuming the condition is false | →
43 | ← | Taking false branch | →
279 | fclose(fp);
280 | return ret;
44 | ← | Opened stream never closed. Potential resource leak
281 | }
282 |
283 | static char* interfaces_list_to_filter(GSList* interfaces, unsigned int remote_port)
284 | {
285 | GString* filter = g_string_new(NULL((void*)0));
286 | GSList* cur;
287 |
288 | // If no port is given, assume the default one. This might not be
289 | // correct if the port is looked up from the ssh config file, but it is
290 | // better than nothing.
291 | if (remote_port == 0) {
292 | remote_port = 22;
293 | }
294 |
295 | if (!interfaces) {
296 | g_string_append_printf(filter, "not port %u", remote_port);
297 | } else {
298 | g_string_append_printf(filter, "not ((host %s", (char*)interfaces->data);
299 | cur = g_slist_next(interfaces)((interfaces) ? (((GSList *)(interfaces))->next) : ((void* )0));
300 | while (cur) {
301 | g_string_append_printf(filter, " or host %s", (char*)cur->data);
302 | cur = g_slist_next(cur)((cur) ? (((GSList *)(cur))->next) : ((void*)0));
303 | }
304 | g_string_append_printf(filter, ") and port %u)", remote_port);
305 | }
306 | return g_string_free(filter, FALSE)(__builtin_constant_p ((0)) ? (((0)) ? (g_string_free) ((filter ), ((0))) : g_string_free_and_steal (filter)) : (g_string_free ) ((filter), ((0))));
307 | }
308 |
309 | static int list_config(char *interface, unsigned int remote_port)
310 | {
311 | unsigned inc = 0;
312 | char* ipfilter;
313 |
314 | if (!interface) {
315 | ws_warning("ERROR: No interface specified.")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 315, __func__, "ERROR: No interface specified."); } } while (0);
316 | return EXIT_FAILURE1;
317 | }
318 |
319 | if (g_strcmp0(interface, sshdump_extcap_interface)) {
320 | ws_warning("ERROR: interface must be %s", sshdump_extcap_interface)do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 320, __func__, "ERROR: interface must be %s", sshdump_extcap_interface ); } } while (0);
321 | return EXIT_FAILURE1;
322 | }
323 |
324 | ipfilter = local_interfaces_to_filter(remote_port);
325 |
326 | printf("arg {number=%u}{call=--remote-host}{display=Remote SSH server address}"
327 | "{type=string}{tooltip=The remote SSH host. It can be both "
328 | "an IP address or a hostname}{required=true}{group=Server}\n", inc++);
329 | printf("arg {number=%u}{call=--remote-port}{display=Remote SSH server port}"
330 | "{type=unsigned}{default=22}{tooltip=The remote SSH host port (1-65535)}"
331 | "{range=1,65535}{group=Server}\n", inc++);
332 | printf("arg {number=%u}{call=--remote-username}{display=Remote SSH server username}"
333 | "{type=string}{tooltip=The remote SSH username. If not provided, "
334 | "the current user will be used}{group=Authentication}\n", inc++);
335 | printf("arg {number=%u}{call=--remote-password}{display=Remote SSH server password}"
336 | "{type=password}{tooltip=The SSH password, used when other methods (SSH agent "
337 | "or key files) are unavailable.}{group=Authentication}\n", inc++);
338 | printf("arg {number=%u}{call=--sshkey}{display=Path to SSH private key}"
339 | "{type=fileselect}{tooltip=The path on the local filesystem of the private SSH key (OpenSSH format)}"
340 | "{mustexist=true}{group=Authentication}\n", inc++);
341 | printf("arg {number=%u}{call=--sshkey-passphrase}{display=SSH key passphrase}"
342 | "{type=password}{tooltip=Passphrase to unlock the SSH private key}{group=Authentication}\n",
343 | inc++);
344 | printf("arg {number=%u}{call=--proxycommand}{display=ProxyCommand}"
345 | "{type=string}{tooltip=The command to use as proxy for the SSH connection}"
346 | "{group=Authentication}\n", inc++);
347 | printf("arg {number=%u}{call=--ssh-sha1}{display=Support SHA-1 keys (deprecated)}"
348 | "{type=boolflag}{tooltip=Support keys and key exchange algorithms using SHA-1 (deprecated)}{group=Authentication}"
349 | "\n", inc++);
350 | printf("arg {number=%u}{call=--remote-interface}{display=Remote interface}"
351 | "{type=string}{tooltip=The remote network interface used for capture"
352 | "}{group=Capture}\n", inc++);
353 | printf("arg {number=%u}{call=--remote-capture-command-select}{display=Remote capture command selection}"
354 | "{type=radio}{tooltip=The remote capture command to build a command line for}{group=Capture}\n", inc);
355 | printf("value {arg=%u}{value=dumpcap}{display=dumpcap}\n", inc);
356 | printf("value {arg=%u}{value=tcpdump}{display=tcpdump}{default=true}\n", inc);
357 | printf("value {arg=%u}{value=other}{display=Other:}\n", inc++);
358 | printf("arg {number=%u}{call=--remote-capture-command}{display=Remote capture command}"
359 | "{type=string}{tooltip=The remote command used to capture}{group=Capture}\n", inc++);
360 | // Deprecated
361 | //printf("arg {number=%u}{call=--remote-sudo}{display=Use sudo on the remote machine}"
362 | // "{type=boolflag}{tooltip=Prepend the capture command with sudo on the remote machine}"
363 | // "{group=Capture}\n", inc++);
364 | printf("arg {number=%u}{call=--remote-priv}{display=Gain capture privilege on the remote machine}"
365 | "{type=radio}{tooltip=Optionally prepend the capture command with sudo or doas on the remote machine}"
366 | "{group=Capture}\n", inc);
367 | printf("value {arg=%u}{value=none}{display=none}{default=true}\n", inc);
368 | printf("value {arg=%u}{value=sudo}{display=sudo}\n", inc);
369 | printf("value {arg=%u}{value=doas -n}{display=doas}\n", inc++);
370 | printf("arg {number=%u}{call=--remote-priv-user}{display=Privileged user name for sudo or doas}"
371 | "{type=string}{tooltip=User name of privileged user to execute the capture command on the remote machine}"
372 | "{group=Capture}\n", inc++);
373 | printf("arg {number=%u}{call=--remote-noprom}{display=No promiscuous mode}"
374 | "{type=boolflag}{tooltip=Don't use promiscuous mode on the remote machine}{group=Capture}"
375 | "\n", inc++);
376 | printf("arg {number=%u}{call=--remote-filter}{display=Remote capture filter}{type=string}"
377 | "{tooltip=The remote capture filter}", inc++);
378 | if (ipfilter)
379 | printf("{default=%s}", ipfilter);
380 | printf("{group=Capture}\n");
381 | printf("arg {number=%u}{call=--remote-count}{display=Packets to capture}"
382 | "{type=unsigned}{default=0}{tooltip=The number of remote packets to capture. (Default: inf)}"
383 | "{group=Capture}\n", inc++);
384 |
385 | extcap_config_debug(&inc);
386 |
387 | g_free(ipfilter);
388 |
389 | return EXIT_SUCCESS0;
390 | }
391 |
392 | static char* concat_filters(const char* extcap_filter, const char* remote_filter)
393 | {
394 | if (!extcap_filter && remote_filter)
395 | return g_strdup(remote_filter)g_strdup_inline (remote_filter);
396 |
397 | if (!remote_filter && extcap_filter)
398 | return g_strdup(extcap_filter)g_strdup_inline (extcap_filter);
399 |
400 | if (!remote_filter && !extcap_filter)
401 | return NULL((void*)0);
402 |
403 | return ws_strdup_printf("(%s) and (%s)", extcap_filter, remote_filter)wmem_strdup_printf(((void*)0), "(%s) and (%s)", extcap_filter , remote_filter);
404 | }
405 |
406 | int main(int argc, char *argv[])
407 | {
408 | char* err_msg;
409 | int result;
410 | int option_idx = 0;
411 | ssh_params_t* ssh_params = ssh_params_new();
412 | char* remote_interface = NULL((void*)0);
413 | char* remote_capture_command_select = NULL((void*)0);
414 | char* remote_capture_command = NULL((void*)0);
415 | char* remote_filter = NULL((void*)0);
416 | uint32_t count = 0;
417 | int ret = EXIT_FAILURE1;
418 | extcap_parameters* extcap_conf = g_new0(extcap_parameters, 1)((extcap_parameters *) g_malloc0_n ((1), sizeof (extcap_parameters )));
419 | char* help_url;
420 | char* help_header = NULL((void*)0);
421 | char* priv = NULL((void*)0);
422 | char* priv_user = NULL((void*)0);
423 | bool_Bool noprom = false0;
424 | char* interface_description = g_strdup("SSH remote capture")g_strdup_inline ("SSH remote capture");
425 |
426 | /* Set the program name. */
427 | g_set_prgname("sshdump");
428 |
429 | /* Initialize log handler early so we can have proper logging during startup. */
430 | extcap_log_init();
431 |
432 | sshdump_extcap_interface = g_path_get_basename(argv[0]);
433 | if (g_str_has_suffix(sshdump_extcap_interface, ".exe")(__builtin_constant_p (".exe")? __extension__ ({ const char * const __str = (sshdump_extcap_interface); const char * const __suffix = (".exe"); gboolean __result = (0); if (__str == ( (void*)0) || __suffix == ((void*)0)) __result = (g_str_has_suffix ) (__str, __suffix); else { const size_t __str_len = strlen ( ((__str) + !(__str))); const size_t __suffix_len = strlen ((( __suffix) + !(__suffix))); if (__str_len >= __suffix_len) __result = memcmp (__str + __str_len - __suffix_len, ((__suffix) + !( __suffix)), __suffix_len) == 0; } __result; }) : (g_str_has_suffix ) (sshdump_extcap_interface, ".exe") )) {
1 | '?' condition is true | →
2 | ← | Assuming '__str' is not equal to null | →
3 | ← | Taking false branch | →
4 | ← | Assuming '__str_len' is < '__suffix_len' | →
5 | ← | Taking false branch | →
6 | ← | Taking false branch | →
434 | sshdump_extcap_interface[strlen(sshdump_extcap_interface) - 4] = '\0';
435 | }
436 |
437 | /*
438 | * Get credential information for later use.
439 | */
440 | init_process_policies();
441 |
442 | /*
443 | * Attempt to get the pathname of the directory containing the
444 | * executable file.
445 | */
446 | err_msg = configuration_init(argv[0], "wireshark");
447 | if (err_msg != NULL((void*)0)) {
7 | ← | Assuming 'err_msg' is equal to NULL | →
8 | ← | Taking false branch | →
448 | ws_warning("Can't get pathname of directory containing the extcap program: %s.",do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 449, __func__, "Can't get pathname of directory containing the extcap program: %s." , err_msg); } } while (0)
449 | err_msg)do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 449, __func__, "Can't get pathname of directory containing the extcap program: %s." , err_msg); } } while (0);
450 | g_free(err_msg);
451 | }
452 |
453 | help_url = data_file_url("sshdump.html", application_configuration_environment_prefix());
454 | extcap_base_set_util_info(extcap_conf, argv[0], SSHDUMP_VERSION_MAJOR"1", SSHDUMP_VERSION_MINOR"2",
455 | SSHDUMP_VERSION_RELEASE"0", help_url);
456 | g_free(help_url);
457 | add_libssh_info(extcap_conf);
458 | if (g_strcmp0(sshdump_extcap_interface, DEFAULT_SSHDUMP_EXTCAP_INTERFACE"sshdump")) {
9 | ← | Assuming the condition is false | →
10 | ← | Taking false branch | →
459 | char* temp = interface_description;
460 | interface_description = ws_strdup_printf("%s, custom version", interface_description)wmem_strdup_printf(((void*)0), "%s, custom version", interface_description );
461 | g_free(temp);
462 | }
463 | extcap_base_register_interface(extcap_conf, sshdump_extcap_interface, interface_description, 147, "Remote capture dependent DLT");
464 | g_free(interface_description);
465 |
466 | help_header = ws_strdup_printf(wmem_strdup_printf(((void*)0), " %s --extcap-interfaces\n" " %s --extcap-interface=%s --extcap-dlts\n" " %s --extcap-interface=%s --extcap-config\n" " %s --extcap-interface=%s --remote-host myhost --remote-port 22222 " "--remote-username myuser --remote-interface eth2 --remote-capture-command 'tcpdump -U -i eth0 -w -' " "--fifo=FILENAME --capture\n", argv[0], argv[0], sshdump_extcap_interface , argv[0], sshdump_extcap_interface, argv[0], sshdump_extcap_interface )
467 | " %s --extcap-interfaces\n"wmem_strdup_printf(((void*)0), " %s --extcap-interfaces\n" " %s --extcap-interface=%s --extcap-dlts\n" " %s --extcap-interface=%s --extcap-config\n" " %s --extcap-interface=%s --remote-host myhost --remote-port 22222 " "--remote-username myuser --remote-interface eth2 --remote-capture-command 'tcpdump -U -i eth0 -w -' " "--fifo=FILENAME --capture\n", argv[0], argv[0], sshdump_extcap_interface , argv[0], sshdump_extcap_interface, argv[0], sshdump_extcap_interface )
468 | " %s --extcap-interface=%s --extcap-dlts\n"wmem_strdup_printf(((void*)0), " %s --extcap-interfaces\n" " %s --extcap-interface=%s --extcap-dlts\n" " %s --extcap-interface=%s --extcap-config\n" " %s --extcap-interface=%s --remote-host myhost --remote-port 22222 " "--remote-username myuser --remote-interface eth2 --remote-capture-command 'tcpdump -U -i eth0 -w -' " "--fifo=FILENAME --capture\n", argv[0], argv[0], sshdump_extcap_interface , argv[0], sshdump_extcap_interface, argv[0], sshdump_extcap_interface )
469 | " %s --extcap-interface=%s --extcap-config\n"wmem_strdup_printf(((void*)0), " %s --extcap-interfaces\n" " %s --extcap-interface=%s --extcap-dlts\n" " %s --extcap-interface=%s --extcap-config\n" " %s --extcap-interface=%s --remote-host myhost --remote-port 22222 " "--remote-username myuser --remote-interface eth2 --remote-capture-command 'tcpdump -U -i eth0 -w -' " "--fifo=FILENAME --capture\n", argv[0], argv[0], sshdump_extcap_interface , argv[0], sshdump_extcap_interface, argv[0], sshdump_extcap_interface )
470 | " %s --extcap-interface=%s --remote-host myhost --remote-port 22222 "wmem_strdup_printf(((void*)0), " %s --extcap-interfaces\n" " %s --extcap-interface=%s --extcap-dlts\n" " %s --extcap-interface=%s --extcap-config\n" " %s --extcap-interface=%s --remote-host myhost --remote-port 22222 " "--remote-username myuser --remote-interface eth2 --remote-capture-command 'tcpdump -U -i eth0 -w -' " "--fifo=FILENAME --capture\n", argv[0], argv[0], sshdump_extcap_interface , argv[0], sshdump_extcap_interface, argv[0], sshdump_extcap_interface )
471 | "--remote-username myuser --remote-interface eth2 --remote-capture-command 'tcpdump -U -i eth0 -w -' "wmem_strdup_printf(((void*)0), " %s --extcap-interfaces\n" " %s --extcap-interface=%s --extcap-dlts\n" " %s --extcap-interface=%s --extcap-config\n" " %s --extcap-interface=%s --remote-host myhost --remote-port 22222 " "--remote-username myuser --remote-interface eth2 --remote-capture-command 'tcpdump -U -i eth0 -w -' " "--fifo=FILENAME --capture\n", argv[0], argv[0], sshdump_extcap_interface , argv[0], sshdump_extcap_interface, argv[0], sshdump_extcap_interface )
472 | "--fifo=FILENAME --capture\n", argv[0], argv[0], sshdump_extcap_interface, argv[0],wmem_strdup_printf(((void*)0), " %s --extcap-interfaces\n" " %s --extcap-interface=%s --extcap-dlts\n" " %s --extcap-interface=%s --extcap-config\n" " %s --extcap-interface=%s --remote-host myhost --remote-port 22222 " "--remote-username myuser --remote-interface eth2 --remote-capture-command 'tcpdump -U -i eth0 -w -' " "--fifo=FILENAME --capture\n", argv[0], argv[0], sshdump_extcap_interface , argv[0], sshdump_extcap_interface, argv[0], sshdump_extcap_interface )
473 | sshdump_extcap_interface, argv[0], sshdump_extcap_interface)wmem_strdup_printf(((void*)0), " %s --extcap-interfaces\n" " %s --extcap-interface=%s --extcap-dlts\n" " %s --extcap-interface=%s --extcap-config\n" " %s --extcap-interface=%s --remote-host myhost --remote-port 22222 " "--remote-username myuser --remote-interface eth2 --remote-capture-command 'tcpdump -U -i eth0 -w -' " "--fifo=FILENAME --capture\n", argv[0], argv[0], sshdump_extcap_interface , argv[0], sshdump_extcap_interface, argv[0], sshdump_extcap_interface );
474 | extcap_help_add_header(extcap_conf, help_header);
475 | g_free(help_header);
476 | extcap_help_add_option(extcap_conf, "--help", "print this help");
477 | extcap_help_add_option(extcap_conf, "--version", "print the version");
478 | extcap_help_add_option(extcap_conf, "--remote-host <host>", "the remote SSH host");
479 | extcap_help_add_option(extcap_conf, "--remote-port <port>", "the remote SSH port");
480 | extcap_help_add_option(extcap_conf, "--remote-username <username>", "the remote SSH username");
481 | extcap_help_add_option(extcap_conf, "--remote-password <password>", "the remote SSH password. If not specified, ssh-agent and ssh-key are used");
482 | extcap_help_add_option(extcap_conf, "--sshkey <private key path>", "the path of the SSH key (OpenSSH format)");
483 | extcap_help_add_option(extcap_conf, "--sshkey-passphrase <private key passphrase>", "the passphrase to unlock private SSH key");
484 | extcap_help_add_option(extcap_conf, "--proxycommand <proxy command>", "the command to use as proxy for the SSH connection");
485 | extcap_help_add_option(extcap_conf, "--ssh-sha1", "support keys and key exchange using SHA-1 (deprecated)");
486 | extcap_help_add_option(extcap_conf, "--remote-interface <iface>", "the remote capture interface");
487 | extcap_help_add_option(extcap_conf, "--remote-capture-command-select <selection>", "dumpcap, tcpdump or other remote capture command");
488 | extcap_help_add_option(extcap_conf, "--remote-capture-command <capture command>", "the remote capture command");
489 | //extcap_help_add_option(extcap_conf, "--remote-sudo", "use sudo on the remote machine to capture"); // Deprecated
490 | extcap_help_add_option(extcap_conf, "--remote-priv <selection>", "none, sudo or doas");
491 | extcap_help_add_option(extcap_conf, "--remote-priv-user <username>", "privileged user name");
492 | extcap_help_add_option(extcap_conf, "--remote-noprom", "don't use promiscuous mode on the remote machine");
493 | extcap_help_add_option(extcap_conf, "--remote-filter <filter>", "a filter for remote capture (default: don't listen on local interfaces IPs)");
494 | extcap_help_add_option(extcap_conf, "--remote-count <count>", "the number of packets to capture");
495 |
496 | ws_opterr = 0;
497 | ws_optind = 0;
498 |
499 | if (argc == 1) {
11 | ← | Assuming 'argc' is not equal to 1 | →
12 | ← | Taking false branch | →
500 | extcap_help_print(extcap_conf);
501 | goto end;
502 | }
503 |
504 | while ((result = ws_getopt_long(argc, argv, ":", longopts, &option_idx)) != -1) {
13 | ← | Assuming the condition is true | →
14 | ← | Loop condition is true. Entering loop body | →
16 | ← | Execution continues on line 504 | →
17 | ← | Assuming the condition is false | →
18 | ← | Loop condition is false. Execution continues on line 621 | →
505 |
506 | switch (result) {
15 | ← | Control jumps to 'case OPT_REMOTE_NOPROM:' at line 604 | →
507 |
508 | case OPT_HELP:
509 | extcap_help_print(extcap_conf);
510 | ret = EXIT_SUCCESS0;
511 | goto end;
512 |
513 | case OPT_VERSION:
514 | extcap_version_print(extcap_conf);
515 | ret = EXIT_SUCCESS0;
516 | goto end;
517 |
518 | case OPT_REMOTE_HOST:
519 | g_free(ssh_params->host);
520 | ssh_params->host = g_strdup(ws_optarg)g_strdup_inline (ws_optarg);
521 | break;
522 |
523 | case OPT_REMOTE_PORT:
524 | if (!ws_strtou16(ws_optarg, NULL((void*)0), &ssh_params->port) || ssh_params->port == 0) {
525 | ws_warning("Invalid port: %s", ws_optarg)do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 525, __func__, "Invalid port: %s", ws_optarg); } } while (0 );
526 | goto end;
527 | }
528 | break;
529 |
530 | case OPT_REMOTE_USERNAME:
531 | g_free(ssh_params->username);
532 | ssh_params->username = g_strdup(ws_optarg)g_strdup_inline (ws_optarg);
533 | break;
534 |
535 | case OPT_REMOTE_PASSWORD:
536 | g_free(ssh_params->password);
537 | ssh_params->password = g_strdup(ws_optarg)g_strdup_inline (ws_optarg);
538 | memset(ws_optarg, 'X', strlen(ws_optarg));
539 | break;
540 |
541 | case OPT_SSHKEY:
542 | g_free(ssh_params->sshkey_path);
543 | ssh_params->sshkey_path = g_strdup(ws_optarg)g_strdup_inline (ws_optarg);
544 | break;
545 |
546 | case OPT_SSHKEY_PASSPHRASE:
547 | g_free(ssh_params->sshkey_passphrase);
548 | ssh_params->sshkey_passphrase = g_strdup(ws_optarg)g_strdup_inline (ws_optarg);
549 | memset(ws_optarg, 'X', strlen(ws_optarg));
550 | break;
551 |
552 | case OPT_PROXYCOMMAND:
553 | g_free(ssh_params->proxycommand);
554 | ssh_params->proxycommand = g_strdup(ws_optarg)g_strdup_inline (ws_optarg);
555 | break;
556 |
557 | case OPT_SSH_SHA1:
558 | ssh_params->ssh_sha1 = true1;
559 | break;
560 |
561 | case OPT_REMOTE_INTERFACE:
562 | g_free(remote_interface);
563 | remote_interface = g_strdup(ws_optarg)g_strdup_inline (ws_optarg);
564 | break;
565 |
566 | case OPT_REMOTE_CAPTURE_COMMAND_SELECT:
567 | g_free(remote_capture_command_select);
568 | remote_capture_command_select = g_strdup(ws_optarg)g_strdup_inline (ws_optarg);
569 | break;
570 |
571 | case OPT_REMOTE_CAPTURE_COMMAND:
572 | g_free(remote_capture_command);
573 | remote_capture_command = g_strdup(ws_optarg)g_strdup_inline (ws_optarg);
574 | break;
575 |
576 | case OPT_REMOTE_SUDO:
577 | // Deprecated
578 | g_free(priv);
579 | priv = g_strdup("sudo")g_strdup_inline ("sudo");
580 | break;
581 |
582 | case OPT_REMOTE_PRIV:
583 | g_free(priv);
584 | priv = g_strdup(ws_optarg)g_strdup_inline (ws_optarg);
585 | break;
586 |
587 | case OPT_REMOTE_PRIV_USER:
588 | g_free(priv_user);
589 | priv_user = g_strdup(ws_optarg)g_strdup_inline (ws_optarg);
590 | break;
591 |
592 | case OPT_REMOTE_FILTER:
593 | g_free(remote_filter);
594 | remote_filter = g_strdup(ws_optarg)g_strdup_inline (ws_optarg);
595 | break;
596 |
597 | case OPT_REMOTE_COUNT:
598 | if (!ws_strtou32(ws_optarg, NULL((void*)0), &count)) {
599 | ws_warning("Invalid value for count: %s", ws_optarg)do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 599, __func__, "Invalid value for count: %s", ws_optarg); } } while (0);
600 | goto end;
601 | }
602 | break;
603 |
604 | case OPT_REMOTE_NOPROM:
605 | noprom = true1;
606 | break;
607 |
608 | case ':':
609 | /* missing option argument */
610 | ws_warning("Option '%s' requires an argument", argv[ws_optind - 1])do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 610, __func__, "Option '%s' requires an argument", argv[ws_optind - 1]); } } while (0);
611 | break;
612 |
613 | default:
614 | if (!extcap_base_parse_options(extcap_conf, result - EXTCAP_OPT_LIST_INTERFACES, ws_optarg)) {
615 | ws_warning("Invalid option: %s", argv[ws_optind - 1])do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 615, __func__, "Invalid option: %s", argv[ws_optind - 1]); } } while (0);
616 | goto end;
617 | }
618 | }
619 | }
620 |
621 | extcap_cmdline_debug(argv, argc);
622 |
623 | if (extcap_base_handle_interface(extcap_conf)) {
19 | ← | Assuming the condition is false | →
20 | ← | Taking false branch | →
624 | ret = EXIT_SUCCESS0;
625 | goto end;
626 | }
627 |
628 | if (extcap_conf->show_config) {
21 | ← | Assuming field 'show_config' is 0 | →
22 | ← | Taking false branch | →
629 | ret = list_config(extcap_conf->interface, ssh_params->port);
630 | goto end;
631 | }
632 |
633 | err_msg = ws_init_sockets();
634 | if (err_msg != NULL((void*)0)) {
23 | ← | Assuming 'err_msg' is equal to NULL | →
24 | ← | Taking false branch | →
635 | ws_warning("ERROR: %s", err_msg)do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 635, __func__, "ERROR: %s", err_msg); } } while (0);
636 | g_free(err_msg);
637 | ws_warning("%s", please_report_bug())do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 637, __func__, "%s", please_report_bug()); } } while (0);
638 | goto end;
639 | }
640 |
641 | if (extcap_conf->capture) {
25 | ← | Assuming field 'capture' is not equal to 0 | →
26 | ← | Taking true branch | →
642 | char* filter;
643 | char* privilege;
644 |
645 | if (!ssh_params->host) {
27 | ← | Assuming field 'host' is non-null | →
646 | ws_warning("Missing parameter: --remote-host")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 646, __func__, "Missing parameter: --remote-host"); } } while (0);
647 | goto end;
648 | }
649 |
650 | if ((priv
27.1 | 'priv' is null
) && g_strcmp0(priv, "none") && strlen(g_strstrip(priv)g_strchomp (g_strchug (priv)))) {
651 | if ((priv_user) && strlen(g_strstrip(priv_user)g_strchomp (g_strchug (priv_user))))
652 | /* Both sudo and doas use the same command line option */
653 | privilege = g_strconcat(priv, " -u ", priv_user, NULL((void*)0));
654 | else
655 | privilege = g_strdup(priv)g_strdup_inline (priv);
656 | } else {
657 | privilege = g_strdup("")g_strdup_inline ("");
658 | }
659 |
660 | // This may result in the use of a different port number than was given in
661 | // the default filter string, as presented in the config dialog. The default
662 | // given is always using the default SSH port since there's no remote SSH port
663 | // given on the command line to get the extcap arguments.
664 | // However the remote SSH port used here is the one given on the command line
665 | // when the capture us started, which is the intended one.
666 | // And this is only happening when no remote filter is specified on the command
667 | // line to start the capture.
668 | if (remote_filter
27.2 | 'remote_filter' is equal to NULL
== NULL((void*)0))
28 | ← | Taking true branch | →
669 | remote_filter = local_interfaces_to_filter(ssh_params->port);
670 | filter = concat_filters(extcap_conf->capture_filter, remote_filter);
671 | ssh_params_set_log_level(ssh_params, extcap_conf->debug);
672 | ret = ssh_open_remote_connection(ssh_params, remote_interface,
29 | ← | Calling 'ssh_open_remote_connection' | →
673 | filter, remote_capture_command_select, remote_capture_command,
674 | privilege, noprom, count, extcap_conf->fifo);
675 | g_free(filter);
676 | g_free(privilege);
677 | } else {
678 | ws_debug("You should not come here... maybe some parameter missing?")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_DEBUG, "extcap/sshdump.c" , 678, __func__, "You should not come here... maybe some parameter missing?" ); } } while (0);
679 | ret = EXIT_FAILURE1;
680 | }
681 |
682 | end:
683 | /* clean up stuff */
684 | ssh_params_free(ssh_params);
685 | g_free(remote_capture_command_select);
686 | g_free(remote_capture_command);
687 | g_free(remote_interface);
688 | g_free(remote_filter);
689 | g_free(priv);
690 | g_free(priv_user);
691 | extcap_base_cleanup(&extcap_conf);
692 | return ret;
693 | }
694 |
695 | /*
696 | * Editor modelines - https://www.wireshark.org/tools/modelines.html
697 | *
698 | * Local variables:
699 | * c-basic-offset: 8
700 | * tab-width: 8
701 | * indent-tabs-mode: t
702 | * End:
703 | *
704 | * vi: set shiftwidth=8 tabstop=8 noexpandtab:
705 | * :indentSize=8:tabSize=8:noTabs=false:
706 | */