### Bug Summary

File: | extcap/sshdump.c
Warning: | line 279, 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-truncation -Wno-format-nonliteral -Wno-pointer-sign -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/2025-10-20-100319-3623-1 -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 |
26 | #include <errno(*__errno_location ()).h>
27 | #include <string.h>
28 | #include <fcntl.h>
29 |
30 | #include <cli_main.h>
31 |
32 | static char* sshdump_extcap_interface;
33 | #define DEFAULT_SSHDUMP_EXTCAP_INTERFACE"sshdump" "sshdump"
34 |
35 | #define SSHDUMP_VERSION_MAJOR"1" "1"
36 | #define SSHDUMP_VERSION_MINOR"2" "2"
37 | #define SSHDUMP_VERSION_RELEASE"0" "0"
38 |
39 | #define SSH_READ_BLOCK_SIZE256 256
40 |
41 | enum {
42 | 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,
43 | OPT_HELP,
44 | OPT_VERSION,
45 | OPT_REMOTE_HOST,
46 | OPT_REMOTE_PORT,
47 | OPT_REMOTE_USERNAME,
48 | OPT_REMOTE_PASSWORD,
49 | OPT_REMOTE_INTERFACE,
50 | OPT_REMOTE_CAPTURE_COMMAND_SELECT,
51 | OPT_REMOTE_CAPTURE_COMMAND,
52 | OPT_REMOTE_FILTER,
53 | OPT_SSHKEY,
54 | OPT_SSHKEY_PASSPHRASE,
55 | OPT_PROXYCOMMAND,
56 | OPT_SSH_SHA1,
57 | OPT_REMOTE_COUNT,
58 | OPT_REMOTE_SUDO, // Deprecated
59 | OPT_REMOTE_PRIV,
60 | OPT_REMOTE_PRIV_USER,
61 | OPT_REMOTE_NOPROM
62 | };
63 |
64 | static const struct ws_option longopts[] = {
65 | 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},
66 | { "help", ws_no_argument0, NULL((void*)0), OPT_HELP},
67 | { "version", ws_no_argument0, NULL((void*)0), OPT_VERSION},
68 | 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},
69 | { "remote-capture-command-select", ws_required_argument1, NULL((void*)0), OPT_REMOTE_CAPTURE_COMMAND_SELECT},
70 | { "remote-capture-command", ws_required_argument1, NULL((void*)0), OPT_REMOTE_CAPTURE_COMMAND},
71 | { "remote-sudo", ws_no_argument0, NULL((void*)0), OPT_REMOTE_SUDO }, // Deprecated
72 | { "remote-priv", ws_required_argument1, NULL((void*)0), OPT_REMOTE_PRIV },
73 | { "remote-priv-user", ws_required_argument1, NULL((void*)0), OPT_REMOTE_PRIV_USER },
74 | { "remote-noprom", ws_no_argument0, NULL((void*)0), OPT_REMOTE_NOPROM },
75 | { 0, 0, 0, 0}
76 | };
77 |
78 | static char* interfaces_list_to_filter(GSList* if_list, unsigned int remote_port);
79 |
80 | static int ssh_loop_read(ssh_channel channel, FILE* fp)
81 | {
82 | int nbytes;
83 | int ret = EXIT_SUCCESS0;
84 | char buffer[SSH_READ_BLOCK_SIZE256];
85 |
86 | /* read from stdin until data are available */
87 | while (ssh_channel_is_open(channel) && !ssh_channel_is_eof(channel)) {
88 | nbytes = ssh_channel_read(channel, buffer, SSH_READ_BLOCK_SIZE256, 0);
89 | if (nbytes < 0) {
90 | ws_warning("Error reading from channel")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 90, __func__, "Error reading from channel"); } } while (0);
91 | goto end;
92 | }
93 | if (nbytes == 0) {
94 | break;
95 | }
96 | if (fwrite(buffer, 1, nbytes, fp) != (unsigned)nbytes) {
97 | ws_warning("Error writing to fifo")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 97, __func__, "Error writing to fifo"); } } while (0);
98 | ret = EXIT_FAILURE1;
99 | goto end;
100 | }
101 | fflush(fp);
102 | }
103 |
104 | /* read loop finished... maybe something wrong happened. Read from stderr */
105 | while (ssh_channel_is_open(channel) && !ssh_channel_is_eof(channel)) {
106 | nbytes = ssh_channel_read(channel, buffer, SSH_READ_BLOCK_SIZE256, 1);
107 | if (nbytes < 0) {
108 | ws_warning("Error reading from channel")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 108, __func__, "Error reading from channel"); } } while (0);
109 | goto end;
110 | }
111 | if (fwrite(buffer, 1, nbytes, stderrstderr) != (unsigned)nbytes) {
112 | ws_warning("Error writing to stderr")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 112, __func__, "Error writing to stderr"); } } while (0);
113 | break;
114 | }
115 | }
116 |
117 | end:
118 | if (ssh_channel_send_eof(channel) != SSH_OK0) {
119 | ws_warning("Error sending EOF in ssh channel")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 119, __func__, "Error sending EOF in ssh channel"); } } while (0);
120 | ret = EXIT_FAILURE1;
121 | }
122 | return ret;
123 | }
124 |
125 | static char* local_interfaces_to_filter(const uint16_t remote_port)
126 | {
127 | GSList* interfaces = local_interfaces_to_list();
128 | char* filter = interfaces_list_to_filter(interfaces, remote_port);
129 | g_slist_free_full(interfaces, g_free);
130 | return filter;
131 | }
132 |
133 | static ssh_channel run_ssh_command(ssh_session sshs, const char* capture_command_select,
134 | const char* capture_command, const char* privilege, bool_Bool noprom,
135 | const char* iface, const char* cfilter, const uint32_t count)
136 | {
137 | char* cmdline = NULL((void*)0);
138 | ssh_channel channel;
139 | char** ifaces_array = NULL((void*)0);
140 | int ifaces_array_num = 0;
141 | GString *ifaces_string;
142 | char *ifaces = NULL((void*)0);
143 | char* quoted_iface = NULL((void*)0);
144 | char* quoted_filter = NULL((void*)0);
145 | char* count_str = NULL((void*)0);
146 | unsigned int remote_port = 22;
147 |
148 | channel = ssh_channel_new(sshs);
149 | if (!channel) {
150 | ws_warning("Can't create channel")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 150, __func__, "Can't create channel"); } } while (0);
151 | return NULL((void*)0);
152 | }
153 |
154 | if (ssh_channel_open_session(channel) != SSH_OK0) {
155 | ws_warning("Can't open session")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 155, __func__, "Can't open session"); } } while (0);
156 | ssh_channel_free(channel);
157 | return NULL((void*)0);
158 | }
159 |
160 | ssh_options_get_port(sshs, &remote_port);
161 |
162 | if (capture_command_select == NULL((void*)0) || !g_strcmp0(capture_command_select, "other")) {
163 | if (capture_command && *capture_command) {
164 | cmdline = g_strdup(capture_command)g_strdup_inline (capture_command);
165 | ws_debug("Remote capture command has disabled other options")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_DEBUG, "extcap/sshdump.c" , 165, __func__, "Remote capture command has disabled other options" ); } } while (0);
166 | } else {
167 | capture_command_select = "tcpdump";
168 | }
169 | }
170 |
171 | /* escape parameters to go save with the shell */
172 | if (!g_strcmp0(capture_command_select, "tcpdump")) {
173 | quoted_iface = iface ? g_shell_quote(iface) : NULL((void*)0);
174 | quoted_filter = g_shell_quote(cfilter ? cfilter : "");
175 | if (count > 0)
176 | count_str = ws_strdup_printf("-c %u", count)wmem_strdup_printf(((void*)0), "-c %u", count);
177 |
178 | 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 )
179 | 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 )
180 | 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 )
181 | 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 )
182 | 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 )
183 | 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 )
184 | 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 );
185 | } else if (!g_strcmp0(capture_command_select, "dumpcap")) {
186 | if (iface) {
187 | ifaces_array = g_strsplit(iface, " ", -1);
188 | ifaces_string = g_string_new(NULL((void*)0));
189 | while (ifaces_array[ifaces_array_num])
190 | {
191 | quoted_iface = g_shell_quote(ifaces_array[ifaces_array_num]);
192 | g_string_append_printf(ifaces_string, "-i %s ", quoted_iface);
193 | ifaces_array_num++;
194 | }
195 | 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))));
196 | }
197 | quoted_filter = g_shell_quote(cfilter ? cfilter : "");
198 | if (count > 0)
199 | count_str = ws_strdup_printf("-c %u", count)wmem_strdup_printf(((void*)0), "-c %u", count);
200 |
201 | 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)
202 | 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)
203 | 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)
204 | 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)
205 | 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)
206 | 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);
207 |
208 | g_free(ifaces);
209 | g_strfreev(ifaces_array);
210 | }
211 |
212 | ws_debug("Running: %s", cmdline)do { if (1) { ws_log_full("sshdump", LOG_LEVEL_DEBUG, "extcap/sshdump.c" , 212, __func__, "Running: %s", cmdline); } } while (0);
213 | if (ssh_channel_request_exec(channel, cmdline) != SSH_OK0) {
214 | ws_warning("Can't request exec")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 214, __func__, "Can't request exec"); } } while (0);
215 | ssh_channel_close(channel);
216 | ssh_channel_free(channel);
217 | channel = NULL((void*)0);
218 | }
219 |
220 | g_free(quoted_iface);
221 | g_free(quoted_filter);
222 | g_free(cmdline);
223 | g_free(count_str);
224 |
225 | return channel;
226 | }
227 |
228 | static int ssh_open_remote_connection(const ssh_params_t* params, const char* iface, const char* cfilter,
229 | const char* capture_command_select, const char* capture_command, const char* privilege,
230 | bool_Bool noprom, const uint32_t count, const char* fifo)
231 | {
232 | ssh_session sshs = NULL((void*)0);
233 | ssh_channel channel = NULL((void*)0);
234 | FILE* fp = stdoutstdout;
235 | int ret = EXIT_FAILURE1;
236 | char* err_info = NULL((void*)0);
237 |
238 | if (g_strcmp0(fifo, "-")) {
30 | ← | Assuming the condition is true | →
31 | ← | Taking true branch | →
239 | /* Open or create the output file */
240 | fp = fopen(fifo, "wb");
32 | ← | Stream opened here | →
33 | ← | Assuming that 'fopen' is successful | →
241 | if (fp
33.1 | 'fp' is not equal to NULL
== NULL((void*)0)) {
34 | ← | Taking false branch | →
242 | 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" , 242, __func__, "Error creating output file: %s (%s)", fifo, g_strerror((*__errno_location ()))); } } while (0);
243 | return EXIT_FAILURE1;
244 | }
245 | }
246 |
247 | sshs = create_ssh_connection(params, &err_info);
248 |
249 | if (!sshs) {
35 | ← | Assuming 'sshs' is null | →
36 | ← | Taking true branch | →
250 | ws_warning("Error creating connection.")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 250, __func__, "Error creating connection."); } } while (0);
37 | ← | Taking true branch | →
38 | ← | Loop condition is false. Exiting loop | →
251 | goto cleanup;
39 | ← | Control jumps to line 270 | →
252 | }
253 |
254 | channel = run_ssh_command(sshs, capture_command_select, capture_command, privilege, noprom, iface, cfilter, count);
255 |
256 | if (!channel) {
257 | ws_warning("Can't run ssh command.")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 257, __func__, "Can't run ssh command."); } } while (0);
258 | goto cleanup;
259 | }
260 |
261 | /* read from channel and write into fp */
262 | if (ssh_loop_read(channel, fp) != EXIT_SUCCESS0) {
263 | ws_warning("Error in read loop.")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 263, __func__, "Error in read loop."); } } while (0);
264 | ret = EXIT_FAILURE1;
265 | goto cleanup;
266 | }
267 |
268 | ret = EXIT_SUCCESS0;
269 | cleanup:
270 | if (err_info)
40 | ← | Assuming 'err_info' is null | →
41 | ← | Taking false branch | →
271 | ws_warning("%s", err_info)do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 271, __func__, "%s", err_info); } } while (0);
272 | g_free(err_info);
273 |
274 | /* clean up and exit */
275 | ssh_cleanup(&sshs, &channel);
276 |
277 | if (g_strcmp0(fifo, "-"))
42 | ← | Assuming the condition is false | →
43 | ← | Taking false branch | →
278 | fclose(fp);
279 | return ret;
44 | ← | Opened stream never closed. Potential resource leak
280 | }
281 |
282 | static char* interfaces_list_to_filter(GSList* interfaces, unsigned int remote_port)
283 | {
284 | GString* filter = g_string_new(NULL((void*)0));
285 | GSList* cur;
286 |
287 | // If no port is given, assume the default one. This might not be
288 | // correct if the port is looked up from the ssh config file, but it is
289 | // better than nothing.
290 | if (remote_port == 0) {
291 | remote_port = 22;
292 | }
293 |
294 | if (!interfaces) {
295 | g_string_append_printf(filter, "not port %u", remote_port);
296 | } else {
297 | g_string_append_printf(filter, "not ((host %s", (char*)interfaces->data);
298 | cur = g_slist_next(interfaces)((interfaces) ? (((GSList *)(interfaces))->next) : ((void* )0));
299 | while (cur) {
300 | g_string_append_printf(filter, " or host %s", (char*)cur->data);
301 | cur = g_slist_next(cur)((cur) ? (((GSList *)(cur))->next) : ((void*)0));
302 | }
303 | g_string_append_printf(filter, ") and port %u)", remote_port);
304 | }
305 | 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))));
306 | }
307 |
308 | static int list_config(char *interface, unsigned int remote_port)
309 | {
310 | unsigned inc = 0;
311 | char* ipfilter;
312 |
313 | if (!interface) {
314 | ws_warning("ERROR: No interface specified.")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 314, __func__, "ERROR: No interface specified."); } } while (0);
315 | return EXIT_FAILURE1;
316 | }
317 |
318 | if (g_strcmp0(interface, sshdump_extcap_interface)) {
319 | ws_warning("ERROR: interface must be %s", sshdump_extcap_interface)do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 319, __func__, "ERROR: interface must be %s", sshdump_extcap_interface ); } } while (0);
320 | return EXIT_FAILURE1;
321 | }
322 |
323 | ipfilter = local_interfaces_to_filter(remote_port);
324 |
325 | printf("arg {number=%u}{call=--remote-host}{display=Remote SSH server address}"
326 | "{type=string}{tooltip=The remote SSH host. It can be both "
327 | "an IP address or a hostname}{required=true}{group=Server}\n", inc++);
328 | printf("arg {number=%u}{call=--remote-port}{display=Remote SSH server port}"
329 | "{type=unsigned}{default=22}{tooltip=The remote SSH host port (1-65535)}"
330 | "{range=1,65535}{group=Server}\n", inc++);
331 | printf("arg {number=%u}{call=--remote-username}{display=Remote SSH server username}"
332 | "{type=string}{tooltip=The remote SSH username. If not provided, "
333 | "the current user will be used}{group=Authentication}\n", inc++);
334 | printf("arg {number=%u}{call=--remote-password}{display=Remote SSH server password}"
335 | "{type=password}{tooltip=The SSH password, used when other methods (SSH agent "
336 | "or key files) are unavailable.}{group=Authentication}\n", inc++);
337 | printf("arg {number=%u}{call=--sshkey}{display=Path to SSH private key}"
338 | "{type=fileselect}{tooltip=The path on the local filesystem of the private SSH key (OpenSSH format)}"
339 | "{mustexist=true}{group=Authentication}\n", inc++);
340 | printf("arg {number=%u}{call=--sshkey-passphrase}{display=SSH key passphrase}"
341 | "{type=password}{tooltip=Passphrase to unlock the SSH private key}{group=Authentication}\n",
342 | inc++);
343 | printf("arg {number=%u}{call=--proxycommand}{display=ProxyCommand}"
344 | "{type=string}{tooltip=The command to use as proxy for the SSH connection}"
345 | "{group=Authentication}\n", inc++);
346 | printf("arg {number=%u}{call=--ssh-sha1}{display=Support SHA-1 keys (deprecated)}"
347 | "{type=boolflag}{tooltip=Support keys and key exchange algorithms using SHA-1 (deprecated)}{group=Authentication}"
348 | "\n", inc++);
349 | printf("arg {number=%u}{call=--remote-interface}{display=Remote interface}"
350 | "{type=string}{tooltip=The remote network interface used for capture"
351 | "}{group=Capture}\n", inc++);
352 | printf("arg {number=%u}{call=--remote-capture-command-select}{display=Remote capture command selection}"
353 | "{type=radio}{tooltip=The remote capture command to build a command line for}{group=Capture}\n", inc);
354 | printf("value {arg=%u}{value=dumpcap}{display=dumpcap}\n", inc);
355 | printf("value {arg=%u}{value=tcpdump}{display=tcpdump}{default=true}\n", inc);
356 | printf("value {arg=%u}{value=other}{display=Other:}\n", inc++);
357 | printf("arg {number=%u}{call=--remote-capture-command}{display=Remote capture command}"
358 | "{type=string}{tooltip=The remote command used to capture}{group=Capture}\n", inc++);
359 | // Deprecated
360 | //printf("arg {number=%u}{call=--remote-sudo}{display=Use sudo on the remote machine}"
361 | // "{type=boolflag}{tooltip=Prepend the capture command with sudo on the remote machine}"
362 | // "{group=Capture}\n", inc++);
363 | printf("arg {number=%u}{call=--remote-priv}{display=Gain capture privilege on the remote machine}"
364 | "{type=radio}{tooltip=Optionally prepend the capture command with sudo or doas on the remote machine}"
365 | "{group=Capture}\n", inc);
366 | printf("value {arg=%u}{value=none}{display=none}{default=true}\n", inc);
367 | printf("value {arg=%u}{value=sudo}{display=sudo}\n", inc);
368 | printf("value {arg=%u}{value=doas -n}{display=doas}\n", inc++);
369 | printf("arg {number=%u}{call=--remote-priv-user}{display=Privileged user name for sudo or doas}"
370 | "{type=string}{tooltip=User name of privileged user to execute the capture command on the remote machine}"
371 | "{group=Capture}\n", inc++);
372 | printf("arg {number=%u}{call=--remote-noprom}{display=No promiscuous mode}"
373 | "{type=boolflag}{tooltip=Don't use promiscuous mode on the remote machine}{group=Capture}"
374 | "\n", inc++);
375 | printf("arg {number=%u}{call=--remote-filter}{display=Remote capture filter}{type=string}"
376 | "{tooltip=The remote capture filter}", inc++);
377 | if (ipfilter)
378 | printf("{default=%s}", ipfilter);
379 | printf("{group=Capture}\n");
380 | printf("arg {number=%u}{call=--remote-count}{display=Packets to capture}"
381 | "{type=unsigned}{default=0}{tooltip=The number of remote packets to capture. (Default: inf)}"
382 | "{group=Capture}\n", inc++);
383 |
384 | extcap_config_debug(&inc);
385 |
386 | g_free(ipfilter);
387 |
388 | return EXIT_SUCCESS0;
389 | }
390 |
391 | static char* concat_filters(const char* extcap_filter, const char* remote_filter)
392 | {
393 | if (!extcap_filter && remote_filter)
394 | return g_strdup(remote_filter)g_strdup_inline (remote_filter);
395 |
396 | if (!remote_filter && extcap_filter)
397 | return g_strdup(extcap_filter)g_strdup_inline (extcap_filter);
398 |
399 | if (!remote_filter && !extcap_filter)
400 | return NULL((void*)0);
401 |
402 | return ws_strdup_printf("(%s) and (%s)", extcap_filter, remote_filter)wmem_strdup_printf(((void*)0), "(%s) and (%s)", extcap_filter , remote_filter);
403 | }
404 |
405 | int main(int argc, char *argv[])
406 | {
407 | char* err_msg;
408 | int result;
409 | int option_idx = 0;
410 | ssh_params_t* ssh_params = ssh_params_new();
411 | char* remote_interface = NULL((void*)0);
412 | char* remote_capture_command_select = NULL((void*)0);
413 | char* remote_capture_command = NULL((void*)0);
414 | char* remote_filter = NULL((void*)0);
415 | uint32_t count = 0;
416 | int ret = EXIT_FAILURE1;
417 | extcap_parameters* extcap_conf = g_new0(extcap_parameters, 1)((extcap_parameters *) g_malloc0_n ((1), sizeof (extcap_parameters )));
418 | char* help_url;
419 | char* help_header = NULL((void*)0);
420 | char* priv = NULL((void*)0);
421 | char* priv_user = NULL((void*)0);
422 | bool_Bool noprom = false0;
423 | char* interface_description = g_strdup("SSH remote capture")g_strdup_inline ("SSH remote capture");
424 |
425 | /* Set the program name. */
426 | g_set_prgname("sshdump");
427 |
428 | /* Initialize log handler early so we can have proper logging during startup. */
429 | extcap_log_init();
430 |
431 | sshdump_extcap_interface = g_path_get_basename(argv[0]);
432 | 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 | →
433 | sshdump_extcap_interface[strlen(sshdump_extcap_interface) - 4] = '\0';
434 | }
435 |
436 | /*
437 | * Get credential information for later use.
438 | */
439 | init_process_policies();
440 |
441 | /*
442 | * Attempt to get the pathname of the directory containing the
443 | * executable file.
444 | */
445 | err_msg = configuration_init(argv[0]);
446 | if (err_msg != NULL((void*)0)) {
7 | ← | Assuming 'err_msg' is equal to NULL | →
8 | ← | Taking false branch | →
447 | 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" , 448, __func__, "Can't get pathname of directory containing the extcap program: %s." , err_msg); } } while (0)
448 | err_msg)do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 448, __func__, "Can't get pathname of directory containing the extcap program: %s." , err_msg); } } while (0);
449 | g_free(err_msg);
450 | }
451 |
452 | help_url = data_file_url("sshdump.html");
453 | extcap_base_set_util_info(extcap_conf, argv[0], SSHDUMP_VERSION_MAJOR"1", SSHDUMP_VERSION_MINOR"2",
454 | SSHDUMP_VERSION_RELEASE"0", help_url);
455 | g_free(help_url);
456 | add_libssh_info(extcap_conf);
457 | if (g_strcmp0(sshdump_extcap_interface, DEFAULT_SSHDUMP_EXTCAP_INTERFACE"sshdump")) {
9 | ← | Assuming the condition is false | →
10 | ← | Taking false branch | →
458 | char* temp = interface_description;
459 | interface_description = ws_strdup_printf("%s, custom version", interface_description)wmem_strdup_printf(((void*)0), "%s, custom version", interface_description );
460 | g_free(temp);
461 | }
462 | extcap_base_register_interface(extcap_conf, sshdump_extcap_interface, interface_description, 147, "Remote capture dependent DLT");
463 | g_free(interface_description);
464 |
465 | 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 )
466 | " %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 )
467 | " %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 )
468 | " %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 )
469 | " %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 )
470 | "--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 )
471 | "--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 )
472 | 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 );
473 | extcap_help_add_header(extcap_conf, help_header);
474 | g_free(help_header);
475 | extcap_help_add_option(extcap_conf, "--help", "print this help");
476 | extcap_help_add_option(extcap_conf, "--version", "print the version");
477 | extcap_help_add_option(extcap_conf, "--remote-host <host>", "the remote SSH host");
478 | extcap_help_add_option(extcap_conf, "--remote-port <port>", "the remote SSH port");
479 | extcap_help_add_option(extcap_conf, "--remote-username <username>", "the remote SSH username");
480 | extcap_help_add_option(extcap_conf, "--remote-password <password>", "the remote SSH password. If not specified, ssh-agent and ssh-key are used");
481 | extcap_help_add_option(extcap_conf, "--sshkey <private key path>", "the path of the SSH key (OpenSSH format)");
482 | extcap_help_add_option(extcap_conf, "--sshkey-passphrase <private key passphrase>", "the passphrase to unlock private SSH key");
483 | extcap_help_add_option(extcap_conf, "--proxycommand <proxy command>", "the command to use as proxy for the SSH connection");
484 | extcap_help_add_option(extcap_conf, "--ssh-sha1", "support keys and key exchange using SHA-1 (deprecated)");
485 | extcap_help_add_option(extcap_conf, "--remote-interface <iface>", "the remote capture interface");
486 | extcap_help_add_option(extcap_conf, "--remote-capture-command-select <selection>", "dumpcap, tcpdump or other remote capture command");
487 | extcap_help_add_option(extcap_conf, "--remote-capture-command <capture command>", "the remote capture command");
488 | //extcap_help_add_option(extcap_conf, "--remote-sudo", "use sudo on the remote machine to capture"); // Deprecated
489 | extcap_help_add_option(extcap_conf, "--remote-priv <selection>", "none, sudo or doas");
490 | extcap_help_add_option(extcap_conf, "--remote-priv-user <username>", "privileged user name");
491 | extcap_help_add_option(extcap_conf, "--remote-noprom", "don't use promiscuous mode on the remote machine");
492 | extcap_help_add_option(extcap_conf, "--remote-filter <filter>", "a filter for remote capture (default: don't listen on local interfaces IPs)");
493 | extcap_help_add_option(extcap_conf, "--remote-count <count>", "the number of packets to capture");
494 |
495 | ws_opterr = 0;
496 | ws_optind = 0;
497 |
498 | if (argc == 1) {
11 | ← | Assuming 'argc' is not equal to 1 | →
12 | ← | Taking false branch | →
499 | extcap_help_print(extcap_conf);
500 | goto end;
501 | }
502 |
503 | 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 503 | →
17 | ← | Assuming the condition is false | →
18 | ← | Loop condition is false. Execution continues on line 620 | →
504 |
505 | switch (result) {
15 | ← | Control jumps to 'case OPT_REMOTE_NOPROM:' at line 603 | →
506 |
507 | case OPT_HELP:
508 | extcap_help_print(extcap_conf);
509 | ret = EXIT_SUCCESS0;
510 | goto end;
511 |
512 | case OPT_VERSION:
513 | extcap_version_print(extcap_conf);
514 | ret = EXIT_SUCCESS0;
515 | goto end;
516 |
517 | case OPT_REMOTE_HOST:
518 | g_free(ssh_params->host);
519 | ssh_params->host = g_strdup(ws_optarg)g_strdup_inline (ws_optarg);
520 | break;
521 |
522 | case OPT_REMOTE_PORT:
523 | if (!ws_strtou16(ws_optarg, NULL((void*)0), &ssh_params->port) || ssh_params->port == 0) {
524 | ws_warning("Invalid port: %s", ws_optarg)do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 524, __func__, "Invalid port: %s", ws_optarg); } } while (0 );
525 | goto end;
526 | }
527 | break;
528 |
529 | case OPT_REMOTE_USERNAME:
530 | g_free(ssh_params->username);
531 | ssh_params->username = g_strdup(ws_optarg)g_strdup_inline (ws_optarg);
532 | break;
533 |
534 | case OPT_REMOTE_PASSWORD:
535 | g_free(ssh_params->password);
536 | ssh_params->password = g_strdup(ws_optarg)g_strdup_inline (ws_optarg);
537 | memset(ws_optarg, 'X', strlen(ws_optarg));
538 | break;
539 |
540 | case OPT_SSHKEY:
541 | g_free(ssh_params->sshkey_path);
542 | ssh_params->sshkey_path = g_strdup(ws_optarg)g_strdup_inline (ws_optarg);
543 | break;
544 |
545 | case OPT_SSHKEY_PASSPHRASE:
546 | g_free(ssh_params->sshkey_passphrase);
547 | ssh_params->sshkey_passphrase = g_strdup(ws_optarg)g_strdup_inline (ws_optarg);
548 | memset(ws_optarg, 'X', strlen(ws_optarg));
549 | break;
550 |
551 | case OPT_PROXYCOMMAND:
552 | g_free(ssh_params->proxycommand);
553 | ssh_params->proxycommand = g_strdup(ws_optarg)g_strdup_inline (ws_optarg);
554 | break;
555 |
556 | case OPT_SSH_SHA1:
557 | ssh_params->ssh_sha1 = true1;
558 | break;
559 |
560 | case OPT_REMOTE_INTERFACE:
561 | g_free(remote_interface);
562 | remote_interface = g_strdup(ws_optarg)g_strdup_inline (ws_optarg);
563 | break;
564 |
565 | case OPT_REMOTE_CAPTURE_COMMAND_SELECT:
566 | g_free(remote_capture_command_select);
567 | remote_capture_command_select = g_strdup(ws_optarg)g_strdup_inline (ws_optarg);
568 | break;
569 |
570 | case OPT_REMOTE_CAPTURE_COMMAND:
571 | g_free(remote_capture_command);
572 | remote_capture_command = g_strdup(ws_optarg)g_strdup_inline (ws_optarg);
573 | break;
574 |
575 | case OPT_REMOTE_SUDO:
576 | // Deprecated
577 | g_free(priv);
578 | priv = g_strdup("sudo")g_strdup_inline ("sudo");
579 | break;
580 |
581 | case OPT_REMOTE_PRIV:
582 | g_free(priv);
583 | priv = g_strdup(ws_optarg)g_strdup_inline (ws_optarg);
584 | break;
585 |
586 | case OPT_REMOTE_PRIV_USER:
587 | g_free(priv_user);
588 | priv_user = g_strdup(ws_optarg)g_strdup_inline (ws_optarg);
589 | break;
590 |
591 | case OPT_REMOTE_FILTER:
592 | g_free(remote_filter);
593 | remote_filter = g_strdup(ws_optarg)g_strdup_inline (ws_optarg);
594 | break;
595 |
596 | case OPT_REMOTE_COUNT:
597 | if (!ws_strtou32(ws_optarg, NULL((void*)0), &count)) {
598 | ws_warning("Invalid value for count: %s", ws_optarg)do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 598, __func__, "Invalid value for count: %s", ws_optarg); } } while (0);
599 | goto end;
600 | }
601 | break;
602 |
603 | case OPT_REMOTE_NOPROM:
604 | noprom = true1;
605 | break;
606 |
607 | case ':':
608 | /* missing option argument */
609 | ws_warning("Option '%s' requires an argument", argv[ws_optind - 1])do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 609, __func__, "Option '%s' requires an argument", argv[ws_optind - 1]); } } while (0);
610 | break;
611 |
612 | default:
613 | if (!extcap_base_parse_options(extcap_conf, result - EXTCAP_OPT_LIST_INTERFACES, ws_optarg)) {
614 | ws_warning("Invalid option: %s", argv[ws_optind - 1])do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 614, __func__, "Invalid option: %s", argv[ws_optind - 1]); } } while (0);
615 | goto end;
616 | }
617 | }
618 | }
619 |
620 | extcap_cmdline_debug(argv, argc);
621 |
622 | if (extcap_base_handle_interface(extcap_conf)) {
19 | ← | Assuming the condition is false | →
20 | ← | Taking false branch | →
623 | ret = EXIT_SUCCESS0;
624 | goto end;
625 | }
626 |
627 | if (extcap_conf->show_config) {
21 | ← | Assuming field 'show_config' is 0 | →
22 | ← | Taking false branch | →
628 | ret = list_config(extcap_conf->interface, ssh_params->port);
629 | goto end;
630 | }
631 |
632 | err_msg = ws_init_sockets();
633 | if (err_msg != NULL((void*)0)) {
23 | ← | Assuming 'err_msg' is equal to NULL | →
24 | ← | Taking false branch | →
634 | ws_warning("ERROR: %s", err_msg)do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 634, __func__, "ERROR: %s", err_msg); } } while (0);
635 | g_free(err_msg);
636 | ws_warning("%s", please_report_bug())do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 636, __func__, "%s", please_report_bug()); } } while (0);
637 | goto end;
638 | }
639 |
640 | if (extcap_conf->capture) {
25 | ← | Assuming field 'capture' is not equal to 0 | →
26 | ← | Taking true branch | →
641 | char* filter;
642 | char* privilege;
643 |
644 | if (!ssh_params->host) {
27 | ← | Assuming field 'host' is non-null | →
645 | ws_warning("Missing parameter: --remote-host")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c" , 645, __func__, "Missing parameter: --remote-host"); } } while (0);
646 | goto end;
647 | }
648 |
649 | if ((priv
27.1 | 'priv' is null
) && g_strcmp0(priv, "none") && strlen(g_strstrip(priv)g_strchomp (g_strchug (priv)))) {
650 | if ((priv_user) && strlen(g_strstrip(priv_user)g_strchomp (g_strchug (priv_user))))
651 | /* Both sudo and doas use the same command line option */
652 | privilege = g_strconcat(priv, " -u ", priv_user, NULL((void*)0));
653 | else
654 | privilege = g_strdup(priv)g_strdup_inline (priv);
655 | } else {
656 | privilege = g_strdup("")g_strdup_inline ("");
657 | }
658 |
659 | // This may result in the use of a different port number than was given in
660 | // the default filter string, as presented in the config dialog. The default
661 | // given is always using the default SSH port since there's no remote SSH port
662 | // given on the command line to get the extcap arguments.
663 | // However the remote SSH port used here is the one given on the command line
664 | // when the capture us started, which is the intended one.
665 | // And this is only happening when no remote filter is specified on the command
666 | // line to start the capture.
667 | if (remote_filter
27.2 | 'remote_filter' is equal to NULL
== NULL((void*)0))
28 | ← | Taking true branch | →
668 | remote_filter = local_interfaces_to_filter(ssh_params->port);
669 | filter = concat_filters(extcap_conf->capture_filter, remote_filter);
670 | ssh_params_set_log_level(ssh_params, extcap_conf->debug);
671 | ret = ssh_open_remote_connection(ssh_params, remote_interface,
29 | ← | Calling 'ssh_open_remote_connection' | →
672 | filter, remote_capture_command_select, remote_capture_command,
673 | privilege, noprom, count, extcap_conf->fifo);
674 | g_free(filter);
675 | g_free(privilege);
676 | } else {
677 | ws_debug("You should not come here... maybe some parameter missing?")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_DEBUG, "extcap/sshdump.c" , 677, __func__, "You should not come here... maybe some parameter missing?" ); } } while (0);
678 | ret = EXIT_FAILURE1;
679 | }
680 |
681 | end:
682 | /* clean up stuff */
683 | ssh_params_free(ssh_params);
684 | g_free(remote_capture_command_select);
685 | g_free(remote_capture_command);
686 | g_free(remote_interface);
687 | g_free(remote_filter);
688 | g_free(priv);
689 | g_free(priv_user);
690 | extcap_base_cleanup(&extcap_conf);
691 | return ret;
692 | }
693 |
694 | /*
695 | * Editor modelines - https://www.wireshark.org/tools/modelines.html
696 | *
697 | * Local variables:
698 | * c-basic-offset: 8
699 | * tab-width: 8
700 | * indent-tabs-mode: t
701 | * End:
702 | *
703 | * vi: set shiftwidth=8 tabstop=8 noexpandtab:
704 | * :indentSize=8:tabSize=8:noTabs=false:
705 | */