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-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/2025-11-05-100318-3623-1 -x c /builds/wireshark/wireshark/extcap/sshdump.c
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 <wsutil/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
33static 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
42enum {
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
65static 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
79static char* interfaces_list_to_filter(GSList* if_list, unsigned int remote_port);
80
81static 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
118end:
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
126static 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
134static 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
229static 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;
270cleanup:
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
283static 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
309static 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
392static 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
406int 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
682end:
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 */