Bug Summary

File:builds/wireshark/wireshark/extcap/sshdump.c
Warning:line 271, 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-22/lib/clang/22 -isystem /usr/include/glib-2.0 -isystem /usr/lib/x86_64-linux-gnu/glib-2.0/include -D CARES_NO_DEPRECATED -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-22/lib/clang/22/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/16/../../../../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=gnu17 -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 -fdwarf2-cfi-asm -o /builds/wireshark/wireshark/sbout/2026-08-04-100415-3661-1 -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 <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
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 SSH_BASE_PACKET_OPTIONS_ENUMOPT_REMOTE_HOST, OPT_REMOTE_PORT, OPT_REMOTE_USERNAME, OPT_REMOTE_PASSWORD
, OPT_SSHKEY, OPT_SSHKEY_PASSPHRASE, OPT_PROXYCOMMAND, OPT_SSH_SHA1
, OPT_UPDATE_KNOWN_HOSTS, OPT_REMOTE_INTERFACE, OPT_REMOTE_FILTER,
47 OPT_REMOTE_CAPTURE_COMMAND_SELECT,
48 OPT_REMOTE_CAPTURE_COMMAND,
49 OPT_REMOTE_COUNT,
50 OPT_REMOTE_SUDO, // Deprecated
51 OPT_REMOTE_PRIV,
52 OPT_REMOTE_PRIV_USER,
53 OPT_REMOTE_NOPROM
54};
55
56static const struct ws_option longopts[] = {
57 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},
58 { "help", ws_no_argument0, NULL((void*)0), OPT_HELP},
59 { "version", ws_no_argument0, NULL((void*)0), OPT_VERSION},
60 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
}, { "update-known-hosts", 0, ((void*)0), OPT_UPDATE_KNOWN_HOSTS
}, { "remote-interface", 1, ((void*)0), OPT_REMOTE_INTERFACE}
, { "remote-filter", 1, ((void*)0), OPT_REMOTE_FILTER},
61 { "remote-capture-command-select", ws_required_argument1, NULL((void*)0), OPT_REMOTE_CAPTURE_COMMAND_SELECT},
62 { "remote-capture-command", ws_required_argument1, NULL((void*)0), OPT_REMOTE_CAPTURE_COMMAND},
63 { "remote-sudo", ws_no_argument0, NULL((void*)0), OPT_REMOTE_SUDO }, // Deprecated
64 { "remote-priv", ws_required_argument1, NULL((void*)0), OPT_REMOTE_PRIV },
65 { "remote-priv-user", ws_required_argument1, NULL((void*)0), OPT_REMOTE_PRIV_USER },
66 { "remote-noprom", ws_no_argument0, NULL((void*)0), OPT_REMOTE_NOPROM },
67 { 0, 0, 0, 0}
68};
69
70static char* interfaces_list_to_filter(GSList* if_list, unsigned int remote_port);
71
72static int ssh_loop_read(ssh_channel channel, FILE* fp)
73{
74 int nbytes;
75 int ret = EXIT_SUCCESS0;
76 char buffer[SSH_READ_BLOCK_SIZE256];
77
78 /* read from stdin until data are available */
79 while (ssh_channel_is_open(channel) && !ssh_channel_is_eof(channel)) {
80 nbytes = ssh_channel_read(channel, buffer, SSH_READ_BLOCK_SIZE256, 0);
81 if (nbytes < 0) {
82 ws_warning("Error reading from channel")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c"
, 82, __func__, "Error reading from channel"); } } while (0);
83 goto end;
84 }
85 if (nbytes == 0) {
86 break;
87 }
88 if (fwrite(buffer, 1, nbytes, fp) != (unsigned)nbytes) {
89 ws_warning("Error writing to fifo")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c"
, 89, __func__, "Error writing to fifo"); } } while (0);
90 ret = EXIT_FAILURE1;
91 goto end;
92 }
93 fflush(fp);
94 }
95
96 /* read loop finished... maybe something wrong happened. Read from stderr */
97 while (ssh_channel_is_open(channel) && !ssh_channel_is_eof(channel)) {
98 nbytes = ssh_channel_read(channel, buffer, SSH_READ_BLOCK_SIZE256, 1);
99 if (nbytes < 0) {
100 ws_warning("Error reading from channel")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c"
, 100, __func__, "Error reading from channel"); } } while (0);
101 goto end;
102 }
103 if (fwrite(buffer, 1, nbytes, stderrstderr) != (unsigned)nbytes) {
104 ws_warning("Error writing to stderr")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c"
, 104, __func__, "Error writing to stderr"); } } while (0);
105 break;
106 }
107 }
108
109end:
110 if (ssh_channel_send_eof(channel) != SSH_OK0) {
111 ws_warning("Error sending EOF in ssh channel")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c"
, 111, __func__, "Error sending EOF in ssh channel"); } } while
(0);
112 ret = EXIT_FAILURE1;
113 }
114 return ret;
115}
116
117static char* local_interfaces_to_filter(const uint16_t remote_port)
118{
119 GSList* interfaces = local_interfaces_to_list();
120 char* filter = interfaces_list_to_filter(interfaces, remote_port);
121 g_slist_free_full(interfaces, g_free);
122 return filter;
123}
124
125static ssh_channel run_ssh_command(ssh_session sshs, const char* capture_command_select,
126 const char* capture_command, const char* privilege, bool_Bool noprom,
127 const char* iface, const char* cfilter, const uint32_t count)
128{
129 char* cmdline = NULL((void*)0);
130 ssh_channel channel;
131 char** ifaces_array = NULL((void*)0);
132 int ifaces_array_num = 0;
133 GString *ifaces_string;
134 char *ifaces = NULL((void*)0);
135 char* quoted_iface = NULL((void*)0);
136 char* quoted_filter = NULL((void*)0);
137 char* count_str = NULL((void*)0);
138 unsigned int remote_port = 22;
139
140 channel = ssh_channel_new(sshs);
141 if (!channel) {
142 ws_warning("Can't create channel")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c"
, 142, __func__, "Can't create channel"); } } while (0);
143 return NULL((void*)0);
144 }
145
146 if (ssh_channel_open_session(channel) != SSH_OK0) {
147 ws_warning("Can't open session")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c"
, 147, __func__, "Can't open session"); } } while (0);
148 ssh_channel_free(channel);
149 return NULL((void*)0);
150 }
151
152 ssh_options_get_port(sshs, &remote_port);
153
154 if (capture_command_select == NULL((void*)0) || !g_strcmp0(capture_command_select, "other")) {
155 if (capture_command && *capture_command) {
156 cmdline = g_strdup(capture_command)g_strdup_inline (capture_command);
157 ws_debug("Remote capture command has disabled other options")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_DEBUG, "extcap/sshdump.c"
, 157, __func__, "Remote capture command has disabled other options"
); } } while (0);
158 } else {
159 capture_command_select = "tcpdump";
160 }
161 }
162
163 /* escape parameters to go save with the shell */
164 if (!g_strcmp0(capture_command_select, "tcpdump")) {
165 quoted_iface = iface ? g_shell_quote(iface) : NULL((void*)0);
166 quoted_filter = g_shell_quote(cfilter ? cfilter : "");
167 if (count > 0)
168 count_str = ws_strdup_printf("-c %u", count)wmem_strdup_printf(((void*)0), "-c %u", count);
169
170 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
)
171 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
)
172 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
)
173 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
)
174 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
)
175 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
)
176 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
);
177 } else if (!g_strcmp0(capture_command_select, "dumpcap")) {
178 if (iface) {
179 ifaces_array = g_strsplit(iface, " ", -1);
180 ifaces_string = g_string_new(NULL((void*)0));
181 while (ifaces_array[ifaces_array_num])
182 {
183 quoted_iface = g_shell_quote(ifaces_array[ifaces_array_num]);
184 g_string_append_printf(ifaces_string, "-i %s ", quoted_iface);
185 ifaces_array_num++;
186 }
187 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))));
188 }
189 quoted_filter = g_shell_quote(cfilter ? cfilter : "");
190 if (count > 0)
191 count_str = ws_strdup_printf("-c %u", count)wmem_strdup_printf(((void*)0), "-c %u", count);
192
193 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)
194 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)
195 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)
196 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)
197 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)
198 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);
199
200 g_free(ifaces)(__builtin_object_size ((ifaces), 0) != ((size_t) - 1)) ? g_free_sized
(ifaces, __builtin_object_size ((ifaces), 0)) : (g_free) (ifaces
);
201 g_strfreev(ifaces_array);
202 }
203
204 ws_debug("Running: %s", cmdline)do { if (1) { ws_log_full("sshdump", LOG_LEVEL_DEBUG, "extcap/sshdump.c"
, 204, __func__, "Running: %s", cmdline); } } while (0);
205 if (ssh_channel_request_exec(channel, cmdline) != SSH_OK0) {
206 ws_warning("Can't request exec")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c"
, 206, __func__, "Can't request exec"); } } while (0);
207 ssh_channel_close(channel);
208 ssh_channel_free(channel);
209 channel = NULL((void*)0);
210 }
211
212 g_free(quoted_iface)(__builtin_object_size ((quoted_iface), 0) != ((size_t) - 1))
? g_free_sized (quoted_iface, __builtin_object_size ((quoted_iface
), 0)) : (g_free) (quoted_iface);
213 g_free(quoted_filter)(__builtin_object_size ((quoted_filter), 0) != ((size_t) - 1)
) ? g_free_sized (quoted_filter, __builtin_object_size ((quoted_filter
), 0)) : (g_free) (quoted_filter);
214 g_free(cmdline)(__builtin_object_size ((cmdline), 0) != ((size_t) - 1)) ? g_free_sized
(cmdline, __builtin_object_size ((cmdline), 0)) : (g_free) (
cmdline);
215 g_free(count_str)(__builtin_object_size ((count_str), 0) != ((size_t) - 1)) ? g_free_sized
(count_str, __builtin_object_size ((count_str), 0)) : (g_free
) (count_str);
216
217 return channel;
218}
219
220static int ssh_open_remote_connection(const ssh_params_t* params, const char* iface, const char* cfilter,
221 const char* capture_command_select, const char* capture_command, const char* privilege,
222 bool_Bool noprom, const uint32_t count, const char* fifo)
223{
224 ssh_session sshs = NULL((void*)0);
225 ssh_channel channel = NULL((void*)0);
226 FILE* fp = stdoutstdout;
227 int ret = EXIT_FAILURE1;
228 char* err_info = NULL((void*)0);
229
230 if (g_strcmp0(fifo, "-")) {
32
←
Assuming the condition is true
→
33
←
Taking true branch
→
231 /* Open or create the output file */
232 fp = fopen(fifo, "wb");
34
←
Stream opened here
→
35
←
Assuming that 'fopen' is successful
→
233 if (fp
35.1
'fp' is not equal to NULL
 == NULL((void*)0)) {
36
←
Taking false branch
→
234 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"
, 234, __func__, "Error creating output file: %s (%s)", fifo,
g_strerror((*__errno_location ()))); } } while (0);
235 return EXIT_FAILURE1;
236 }
237 }
238
239 sshs = create_ssh_connection(params, &err_info);
240
241 if (!sshs) {
37
←
Assuming 'sshs' is null
→
38
←
Taking true branch
→
242 ws_warning("Error creating connection.")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c"
, 242, __func__, "Error creating connection."); } } while (0);
39
←
Taking true branch
→
40
←
Loop condition is false. Exiting loop
→
243 goto cleanup;
41
←
Control jumps to line 262
→
244 }
245
246 channel = run_ssh_command(sshs, capture_command_select, capture_command, privilege, noprom, iface, cfilter, count);
247
248 if (!channel) {
249 ws_warning("Can't run ssh command.")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c"
, 249, __func__, "Can't run ssh command."); } } while (0);
250 goto cleanup;
251 }
252
253 /* read from channel and write into fp */
254 if (ssh_loop_read(channel, fp) != EXIT_SUCCESS0) {
255 ws_warning("Error in read loop.")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c"
, 255, __func__, "Error in read loop."); } } while (0);
256 ret = EXIT_FAILURE1;
257 goto cleanup;
258 }
259
260 ret = EXIT_SUCCESS0;
261cleanup:
262 if (err_info)
42
←
Assuming 'err_info' is null
→
263 ws_warning("%s", err_info)do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c"
, 263, __func__, "%s", err_info); } } while (0);
264 g_free(err_info)(__builtin_object_size ((err_info), 0) != ((size_t) - 1)) ? g_free_sized
(err_info, __builtin_object_size ((err_info), 0)) : (g_free)
(err_info);
43
←
Taking false branch
→
44
←
Assuming the condition is false
→
45
←
'?' condition is false
→
265
266 /* clean up and exit */
267 ssh_cleanup(&sshs, &channel);
268
269 if (g_strcmp0(fifo, "-"))
46
←
Assuming the condition is false
→
47
←
Taking false branch
→
270 fclose(fp);
271 return ret;
48
←
Opened stream never closed. Potential resource leak
272}
273
274static char* interfaces_list_to_filter(GSList* interfaces, unsigned int remote_port)
275{
276 GString* filter = g_string_new(NULL((void*)0));
277 GSList* cur;
278
279 // If no port is given, assume the default one. This might not be
280 // correct if the port is looked up from the ssh config file, but it is
281 // better than nothing.
282 if (remote_port == 0) {
283 remote_port = 22;
284 }
285
286 if (!interfaces) {
287 g_string_append_printf(filter, "not port %u", remote_port);
288 } else {
289 g_string_append_printf(filter, "not ((host %s", (char*)interfaces->data);
290 cur = g_slist_next(interfaces)((interfaces) ? (((GSList *)(interfaces))->next) : ((void*
)0));
291 while (cur) {
292 g_string_append_printf(filter, " or host %s", (char*)cur->data);
293 cur = g_slist_next(cur)((cur) ? (((GSList *)(cur))->next) : ((void*)0));
294 }
295 g_string_append_printf(filter, ") and port %u)", remote_port);
296 }
297 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))));
298}
299
300static int list_config(char *interface, unsigned int remote_port)
301{
302 unsigned inc = 0;
303 char* ipfilter;
304
305 if (!interface) {
306 ws_warning("ERROR: No interface specified.")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c"
, 306, __func__, "ERROR: No interface specified."); } } while
(0);
307 return EXIT_FAILURE1;
308 }
309
310 if (g_strcmp0(interface, sshdump_extcap_interface)) {
311 ws_warning("ERROR: interface must be %s", sshdump_extcap_interface)do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c"
, 311, __func__, "ERROR: interface must be %s", sshdump_extcap_interface
); } } while (0);
312 return EXIT_FAILURE1;
313 }
314
315 ipfilter = local_interfaces_to_filter(remote_port);
316
317 ssh_base_list_config(&inc);
318
319 printf("arg {number=%u}{call=--remote-interface}{display=Remote interface}"
320 "{type=string}{tooltip=The remote network interface used for capture"
321 "}{group=Capture}\n", inc++);
322 printf("arg {number=%u}{call=--remote-capture-command-select}{display=Remote capture command selection}"
323 "{type=radio}{tooltip=The remote capture command to build a command line for}{group=Capture}\n", inc);
324 printf("value {arg=%u}{value=dumpcap}{display=dumpcap}\n", inc);
325 printf("value {arg=%u}{value=tcpdump}{display=tcpdump}{default=true}\n", inc);
326 printf("value {arg=%u}{value=other}{display=Other:}\n", inc++);
327 printf("arg {number=%u}{call=--remote-capture-command}{display=Remote capture command}"
328 "{type=string}{tooltip=The remote command used to capture}{group=Capture}\n", inc++);
329 // Deprecated
330 //printf("arg {number=%u}{call=--remote-sudo}{display=Use sudo on the remote machine}"
331 // "{type=boolflag}{tooltip=Prepend the capture command with sudo on the remote machine}"
332 // "{group=Capture}\n", inc++);
333 printf("arg {number=%u}{call=--remote-priv}{display=Gain capture privilege on the remote machine}"
334 "{type=radio}{tooltip=Optionally prepend the capture command with sudo or doas on the remote machine}"
335 "{group=Capture}\n", inc);
336 printf("value {arg=%u}{value=none}{display=none}{default=true}\n", inc);
337 printf("value {arg=%u}{value=sudo}{display=sudo}\n", inc);
338 printf("value {arg=%u}{value=doas -n}{display=doas}\n", inc++);
339 printf("arg {number=%u}{call=--remote-priv-user}{display=Privileged user name for sudo or doas}"
340 "{type=string}{tooltip=User name of privileged user to execute the capture command on the remote machine}"
341 "{group=Capture}\n", inc++);
342 printf("arg {number=%u}{call=--remote-noprom}{display=No promiscuous mode}"
343 "{type=boolflag}{tooltip=Don't use promiscuous mode on the remote machine}{group=Capture}"
344 "\n", inc++);
345 printf("arg {number=%u}{call=--remote-filter}{display=Remote capture filter}{type=string}"
346 "{tooltip=The remote capture filter}", inc++);
347 if (ipfilter)
348 printf("{default=%s}", ipfilter);
349 printf("{group=Capture}\n");
350 printf("arg {number=%u}{call=--remote-count}{display=Packets to capture}"
351 "{type=unsigned}{default=0}{tooltip=The number of remote packets to capture. (Default: inf)}"
352 "{group=Capture}\n", inc++);
353
354 extcap_config_debug(&inc);
355
356 g_free(ipfilter)(__builtin_object_size ((ipfilter), 0) != ((size_t) - 1)) ? g_free_sized
(ipfilter, __builtin_object_size ((ipfilter), 0)) : (g_free)
(ipfilter);
357
358 return EXIT_SUCCESS0;
359}
360
361static char* concat_filters(const char* extcap_filter, const char* remote_filter)
362{
363 if (!extcap_filter && remote_filter)
364 return g_strdup(remote_filter)g_strdup_inline (remote_filter);
365
366 if (!remote_filter && extcap_filter)
367 return g_strdup(extcap_filter)g_strdup_inline (extcap_filter);
368
369 if (!remote_filter && !extcap_filter)
370 return NULL((void*)0);
371
372 return ws_strdup_printf("(%s) and (%s)", extcap_filter, remote_filter)wmem_strdup_printf(((void*)0), "(%s) and (%s)", extcap_filter
, remote_filter);
373}
374
375int main(int argc, char *argv[])
376{
377 char* err_msg;
378 int result;
379 int option_idx = 0;
380 ssh_params_t* ssh_params = ssh_params_new();
381 char* remote_interface = NULL((void*)0);
382 char* remote_capture_command_select = NULL((void*)0);
383 char* remote_capture_command = NULL((void*)0);
384 char* remote_filter = NULL((void*)0);
385 uint32_t count = 0;
386 int ret = EXIT_FAILURE1;
387 extcap_parameters* extcap_conf = g_new0(extcap_parameters, 1)((extcap_parameters *) g_malloc0_n ((1), sizeof (extcap_parameters
)));
388 char* help_url;
389 char* help_header = NULL((void*)0);
390 char* priv = NULL((void*)0);
391 char* priv_user = NULL((void*)0);
392 bool_Bool noprom = false0;
393 char* interface_description = g_strdup("SSH remote capture")g_strdup_inline ("SSH remote capture");
394
395 /* Set the program name. */
396 g_set_prgname("sshdump");
397
398 /* Initialize log handler early so we can have proper logging during startup. */
399 extcap_log_init();
400
401 sshdump_extcap_interface = g_path_get_basename(argv[0]);
402 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
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Taking false branch
→
403 sshdump_extcap_interface[strlen(sshdump_extcap_interface) - 4] = '\0';
404 }
405
406 /*
407 * Get credential information for later use.
408 */
409 init_process_policies();
410
411 /*
412 * Attempt to get the pathname of the directory containing the
413 * executable file.
414 */
415 err_msg = configuration_init(argv[0], "wireshark");
416 if (err_msg != NULL((void*)0)) {
7
←
Assuming 'err_msg' is equal to NULL
→
8
←
Taking false branch
→
417 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"
, 418, __func__, "Can't get pathname of directory containing the extcap program: %s."
, err_msg); } } while (0)
418 err_msg)do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c"
, 418, __func__, "Can't get pathname of directory containing the extcap program: %s."
, err_msg); } } while (0);
419 g_free(err_msg)(__builtin_object_size ((err_msg), 0) != ((size_t) - 1)) ? g_free_sized
(err_msg, __builtin_object_size ((err_msg), 0)) : (g_free) (
err_msg);
420 }
421
422 help_url = data_file_url("sshdump.html", application_configuration_environment_prefix());
423 extcap_base_set_util_info(extcap_conf, argv[0], SSHDUMP_VERSION_MAJOR"1", SSHDUMP_VERSION_MINOR"2",
424 SSHDUMP_VERSION_RELEASE"0", help_url);
425 g_free(help_url)(__builtin_object_size ((help_url), 0) != ((size_t) - 1)) ? g_free_sized
(help_url, __builtin_object_size ((help_url), 0)) : (g_free)
(help_url);
9
←
Assuming the condition is false
→
10
←
'?' condition is false
→
426 add_libssh_info(extcap_conf);
427 if (g_strcmp0(sshdump_extcap_interface, DEFAULT_SSHDUMP_EXTCAP_INTERFACE"sshdump")) {
11
←
Assuming the condition is false
→
12
←
Taking false branch
→
428 char* temp = interface_description;
429 interface_description = ws_strdup_printf("%s, custom version", interface_description)wmem_strdup_printf(((void*)0), "%s, custom version", interface_description
);
430 g_free(temp)(__builtin_object_size ((temp), 0) != ((size_t) - 1)) ? g_free_sized
(temp, __builtin_object_size ((temp), 0)) : (g_free) (temp);
431 }
432 extcap_base_register_interface(extcap_conf, sshdump_extcap_interface, interface_description, 147, "Remote capture dependent DLT");
433 g_free(interface_description)(__builtin_object_size ((interface_description), 0) != ((size_t
) - 1)) ? g_free_sized (interface_description, __builtin_object_size
((interface_description), 0)) : (g_free) (interface_description
);
13
←
Assuming the condition is false
→
14
←
'?' condition is false
→
434
435 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
)
436 " %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
)
437 " %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
)
438 " %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
)
439 " %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
)
440 "--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
)
441 "--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
)
442 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
);
443 extcap_help_add_header(extcap_conf, help_header);
444 g_free(help_header)(__builtin_object_size ((help_header), 0) != ((size_t) - 1)) ?
g_free_sized (help_header, __builtin_object_size ((help_header
), 0)) : (g_free) (help_header);
15
←
Assuming the condition is false
→
16
←
'?' condition is false
→
445 extcap_help_add_option(extcap_conf, "--help", "print this help");
446 extcap_help_add_option(extcap_conf, "--version", "print the version");
447 ssh_base_add_help_options(extcap_conf);
448 extcap_help_add_option(extcap_conf, "--remote-interface <iface>", "the remote capture interface");
449 extcap_help_add_option(extcap_conf, "--remote-capture-command-select <selection>", "dumpcap, tcpdump or other remote capture command");
450 extcap_help_add_option(extcap_conf, "--remote-capture-command <capture command>", "the remote capture command");
451 //extcap_help_add_option(extcap_conf, "--remote-sudo", "use sudo on the remote machine to capture"); // Deprecated
452 extcap_help_add_option(extcap_conf, "--remote-priv <selection>", "none, sudo or doas");
453 extcap_help_add_option(extcap_conf, "--remote-priv-user <username>", "privileged user name");
454 extcap_help_add_option(extcap_conf, "--remote-noprom", "don't use promiscuous mode on the remote machine");
455 extcap_help_add_option(extcap_conf, "--remote-filter <filter>", "a filter for remote capture (default: don't listen on local interfaces IPs)");
456 extcap_help_add_option(extcap_conf, "--remote-count <count>", "the number of packets to capture");
457
458 ws_opterr = 0;
459 ws_optind = 0;
460
461 if (argc == 1) {
17
←
Assuming 'argc' is not equal to 1
→
18
←
Taking false branch
→
462 extcap_help_print(extcap_conf);
463 goto end;
464 }
465
466 while ((result = ws_getopt_long(argc, argv, ":", longopts, &option_idx)) != -1) {
19
←
Assuming the condition is false
→
20
←
Loop condition is false. Execution continues on line 587
→
467
468 switch (result) {
469
470 case OPT_HELP:
471 extcap_help_print(extcap_conf);
472 ret = EXIT_SUCCESS0;
473 goto end;
474
475 case OPT_VERSION:
476 extcap_version_print(extcap_conf);
477 ret = EXIT_SUCCESS0;
478 goto end;
479
480 case OPT_REMOTE_HOST:
481 g_free(ssh_params->host)(__builtin_object_size ((ssh_params->host), 0) != ((size_t
) - 1)) ? g_free_sized (ssh_params->host, __builtin_object_size
((ssh_params->host), 0)) : (g_free) (ssh_params->host);
482 ssh_params->host = g_strdup(ws_optarg)g_strdup_inline (ws_optarg);
483 break;
484
485 case OPT_REMOTE_PORT:
486 if (!ws_strtou16(ws_optarg, NULL((void*)0), &ssh_params->port) || ssh_params->port == 0) {
487 ws_warning("Invalid port: %s", ws_optarg)do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c"
, 487, __func__, "Invalid port: %s", ws_optarg); } } while (0
);
488 goto end;
489 }
490 break;
491
492 case OPT_REMOTE_USERNAME:
493 g_free(ssh_params->username)(__builtin_object_size ((ssh_params->username), 0) != ((size_t
) - 1)) ? g_free_sized (ssh_params->username, __builtin_object_size
((ssh_params->username), 0)) : (g_free) (ssh_params->username
);
494 ssh_params->username = g_strdup(ws_optarg)g_strdup_inline (ws_optarg);
495 break;
496
497 case OPT_REMOTE_PASSWORD:
498 g_free(ssh_params->password)(__builtin_object_size ((ssh_params->password), 0) != ((size_t
) - 1)) ? g_free_sized (ssh_params->password, __builtin_object_size
((ssh_params->password), 0)) : (g_free) (ssh_params->password
);
499 ssh_params->password = g_strdup(ws_optarg)g_strdup_inline (ws_optarg);
500 memset(ws_optarg, 'X', strlen(ws_optarg));
501 break;
502
503 case OPT_SSHKEY:
504 g_free(ssh_params->sshkey_path)(__builtin_object_size ((ssh_params->sshkey_path), 0) != (
(size_t) - 1)) ? g_free_sized (ssh_params->sshkey_path, __builtin_object_size
((ssh_params->sshkey_path), 0)) : (g_free) (ssh_params->
sshkey_path);
505 ssh_params->sshkey_path = g_strdup(ws_optarg)g_strdup_inline (ws_optarg);
506 break;
507
508 case OPT_SSHKEY_PASSPHRASE:
509 g_free(ssh_params->sshkey_passphrase)(__builtin_object_size ((ssh_params->sshkey_passphrase), 0
) != ((size_t) - 1)) ? g_free_sized (ssh_params->sshkey_passphrase
, __builtin_object_size ((ssh_params->sshkey_passphrase), 0
)) : (g_free) (ssh_params->sshkey_passphrase);
510 ssh_params->sshkey_passphrase = g_strdup(ws_optarg)g_strdup_inline (ws_optarg);
511 memset(ws_optarg, 'X', strlen(ws_optarg));
512 break;
513
514 case OPT_PROXYCOMMAND:
515 g_free(ssh_params->proxycommand)(__builtin_object_size ((ssh_params->proxycommand), 0) != (
(size_t) - 1)) ? g_free_sized (ssh_params->proxycommand, __builtin_object_size
((ssh_params->proxycommand), 0)) : (g_free) (ssh_params->
proxycommand);
516 ssh_params->proxycommand = g_strdup(ws_optarg)g_strdup_inline (ws_optarg);
517 break;
518
519 case OPT_SSH_SHA1:
520 ssh_params->ssh_sha1 = true1;
521 break;
522
523 case OPT_UPDATE_KNOWN_HOSTS:
524 ssh_params->update_known_hosts = true1;
525 break;
526
527 case OPT_REMOTE_INTERFACE:
528 g_free(remote_interface)(__builtin_object_size ((remote_interface), 0) != ((size_t) -
1)) ? g_free_sized (remote_interface, __builtin_object_size (
(remote_interface), 0)) : (g_free) (remote_interface);
529 remote_interface = g_strdup(ws_optarg)g_strdup_inline (ws_optarg);
530 break;
531
532 case OPT_REMOTE_CAPTURE_COMMAND_SELECT:
533 g_free(remote_capture_command_select)(__builtin_object_size ((remote_capture_command_select), 0) !=
((size_t) - 1)) ? g_free_sized (remote_capture_command_select
, __builtin_object_size ((remote_capture_command_select), 0))
: (g_free) (remote_capture_command_select);
534 remote_capture_command_select = g_strdup(ws_optarg)g_strdup_inline (ws_optarg);
535 break;
536
537 case OPT_REMOTE_CAPTURE_COMMAND:
538 g_free(remote_capture_command)(__builtin_object_size ((remote_capture_command), 0) != ((size_t
) - 1)) ? g_free_sized (remote_capture_command, __builtin_object_size
((remote_capture_command), 0)) : (g_free) (remote_capture_command
);
539 remote_capture_command = g_strdup(ws_optarg)g_strdup_inline (ws_optarg);
540 break;
541
542 case OPT_REMOTE_SUDO:
543 // Deprecated
544 g_free(priv)(__builtin_object_size ((priv), 0) != ((size_t) - 1)) ? g_free_sized
(priv, __builtin_object_size ((priv), 0)) : (g_free) (priv);
545 priv = g_strdup("sudo")g_strdup_inline ("sudo");
546 break;
547
548 case OPT_REMOTE_PRIV:
549 g_free(priv)(__builtin_object_size ((priv), 0) != ((size_t) - 1)) ? g_free_sized
(priv, __builtin_object_size ((priv), 0)) : (g_free) (priv);
550 priv = g_strdup(ws_optarg)g_strdup_inline (ws_optarg);
551 break;
552
553 case OPT_REMOTE_PRIV_USER:
554 g_free(priv_user)(__builtin_object_size ((priv_user), 0) != ((size_t) - 1)) ? g_free_sized
(priv_user, __builtin_object_size ((priv_user), 0)) : (g_free
) (priv_user);
555 priv_user = g_strdup(ws_optarg)g_strdup_inline (ws_optarg);
556 break;
557
558 case OPT_REMOTE_FILTER:
559 g_free(remote_filter)(__builtin_object_size ((remote_filter), 0) != ((size_t) - 1)
) ? g_free_sized (remote_filter, __builtin_object_size ((remote_filter
), 0)) : (g_free) (remote_filter);
560 remote_filter = g_strdup(ws_optarg)g_strdup_inline (ws_optarg);
561 break;
562
563 case OPT_REMOTE_COUNT:
564 if (!ws_strtou32(ws_optarg, NULL((void*)0), &count)) {
565 ws_warning("Invalid value for count: %s", ws_optarg)do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c"
, 565, __func__, "Invalid value for count: %s", ws_optarg); }
} while (0);
566 goto end;
567 }
568 break;
569
570 case OPT_REMOTE_NOPROM:
571 noprom = true1;
572 break;
573
574 case ':':
575 /* missing option argument */
576 ws_warning("Option '%s' requires an argument", argv[ws_optind - 1])do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c"
, 576, __func__, "Option '%s' requires an argument", argv[ws_optind
- 1]); } } while (0);
577 break;
578
579 default:
580 if (!extcap_base_parse_options(extcap_conf, result - EXTCAP_OPT_LIST_INTERFACES, ws_optarg)) {
581 ws_warning("Invalid option: %s", argv[ws_optind - 1])do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c"
, 581, __func__, "Invalid option: %s", argv[ws_optind - 1]); }
} while (0);
582 goto end;
583 }
584 }
585 }
586
587 extcap_cmdline_debug(argv, argc);
588
589 if (extcap_base_handle_interface(extcap_conf)) {
21
←
Assuming the condition is false
→
22
←
Taking false branch
→
590 ret = EXIT_SUCCESS0;
591 goto end;
592 }
593
594 if (extcap_conf->show_config) {
23
←
Assuming field 'show_config' is 0
→
24
←
Taking false branch
→
595 ret = list_config(extcap_conf->interface, ssh_params->port);
596 goto end;
597 }
598
599 err_msg = ws_init_sockets();
600 if (err_msg != NULL((void*)0)) {
25
←
Assuming 'err_msg' is equal to NULL
→
26
←
Taking false branch
→
601 ws_warning("ERROR: %s", err_msg)do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c"
, 601, __func__, "ERROR: %s", err_msg); } } while (0);
602 g_free(err_msg)(__builtin_object_size ((err_msg), 0) != ((size_t) - 1)) ? g_free_sized
(err_msg, __builtin_object_size ((err_msg), 0)) : (g_free) (
err_msg);
603 ws_warning("%s", please_report_bug())do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c"
, 603, __func__, "%s", please_report_bug()); } } while (0);
604 goto end;
605 }
606
607 if (extcap_conf->capture) {
27
←
Assuming field 'capture' is not equal to 0
→
28
←
Taking true branch
→
608 char* filter;
609 char* privilege;
610
611 if (!ssh_params->host) {
29
←
Assuming field 'host' is non-null
→
612 ws_warning("Missing parameter: --remote-host")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_WARNING, "extcap/sshdump.c"
, 612, __func__, "Missing parameter: --remote-host"); } } while
(0);
613 goto end;
614 }
615
616 if ((priv
29.1
'priv' is null
) && g_strcmp0(priv, "none") && strlen(g_strstrip(priv)g_strchomp (g_strchug (priv)))) {
617 if ((priv_user) && strlen(g_strstrip(priv_user)g_strchomp (g_strchug (priv_user))))
618 /* Both sudo and doas use the same command line option */
619 privilege = g_strconcat(priv, " -u ", priv_user, NULL((void*)0));
620 else
621 privilege = g_strdup(priv)g_strdup_inline (priv);
622 } else {
623 privilege = g_strdup("")g_strdup_inline ("");
624 }
625
626 // This may result in the use of a different port number than was given in
627 // the default filter string, as presented in the config dialog. The default
628 // given is always using the default SSH port since there's no remote SSH port
629 // given on the command line to get the extcap arguments.
630 // However the remote SSH port used here is the one given on the command line
631 // when the capture us started, which is the intended one.
632 // And this is only happening when no remote filter is specified on the command
633 // line to start the capture.
634 if (remote_filter
29.2
'remote_filter' is equal to NULL
 == NULL((void*)0))
30
←
Taking true branch
→
635 remote_filter = local_interfaces_to_filter(ssh_params->port);
636 filter = concat_filters(extcap_conf->capture_filter, remote_filter);
637 ssh_params_set_log_level(ssh_params, extcap_conf->debug);
638 ret = ssh_open_remote_connection(ssh_params, remote_interface,
31
←
Calling 'ssh_open_remote_connection'
→
639 filter, remote_capture_command_select, remote_capture_command,
640 privilege, noprom, count, extcap_conf->fifo);
641 g_free(filter)(__builtin_object_size ((filter), 0) != ((size_t) - 1)) ? g_free_sized
(filter, __builtin_object_size ((filter), 0)) : (g_free) (filter
);
642 g_free(privilege)(__builtin_object_size ((privilege), 0) != ((size_t) - 1)) ? g_free_sized
(privilege, __builtin_object_size ((privilege), 0)) : (g_free
) (privilege);
643 } else {
644 ws_debug("You should not come here... maybe some parameter missing?")do { if (1) { ws_log_full("sshdump", LOG_LEVEL_DEBUG, "extcap/sshdump.c"
, 644, __func__, "You should not come here... maybe some parameter missing?"
); } } while (0);
645 ret = EXIT_FAILURE1;
646 }
647
648end:
649 /* clean up stuff */
650 ssh_params_free(ssh_params);
651 g_free(remote_capture_command_select)(__builtin_object_size ((remote_capture_command_select), 0) !=
((size_t) - 1)) ? g_free_sized (remote_capture_command_select
, __builtin_object_size ((remote_capture_command_select), 0))
: (g_free) (remote_capture_command_select);
652 g_free(remote_capture_command)(__builtin_object_size ((remote_capture_command), 0) != ((size_t
) - 1)) ? g_free_sized (remote_capture_command, __builtin_object_size
((remote_capture_command), 0)) : (g_free) (remote_capture_command
);
653 g_free(remote_interface)(__builtin_object_size ((remote_interface), 0) != ((size_t) -
1)) ? g_free_sized (remote_interface, __builtin_object_size (
(remote_interface), 0)) : (g_free) (remote_interface);
654 g_free(remote_filter)(__builtin_object_size ((remote_filter), 0) != ((size_t) - 1)
) ? g_free_sized (remote_filter, __builtin_object_size ((remote_filter
), 0)) : (g_free) (remote_filter);
655 g_free(priv)(__builtin_object_size ((priv), 0) != ((size_t) - 1)) ? g_free_sized
(priv, __builtin_object_size ((priv), 0)) : (g_free) (priv);
656 g_free(priv_user)(__builtin_object_size ((priv_user), 0) != ((size_t) - 1)) ? g_free_sized
(priv_user, __builtin_object_size ((priv_user), 0)) : (g_free
) (priv_user);
657 extcap_base_cleanup(&extcap_conf);
658 return ret;
659}
660
661/*
662 * Editor modelines - https://www.wireshark.org/tools/modelines.html
663 *
664 * Local variables:
665 * c-basic-offset: 8
666 * tab-width: 8
667 * indent-tabs-mode: t
668 * End:
669 *
670 * vi: set shiftwidth=8 tabstop=8 noexpandtab:
671 * :indentSize=8:tabSize=8:noTabs=false:
672 */