forked from osmocom/wireshark
PROFINET: Fix possibly passing a null pointer to function
A NULL pointer is possibly being passed to a function identified. Change-Id: I87afb4fcd669451d94fecbcb827e7ff82d3e6740 Reviewed-on: https://code.wireshark.org/review/17950 Petri-Dish: Alexis La Goutte <alexis.lagoutte@gmail.com> Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org> Reviewed-by: Jaap Keuter <jaap.keuter@xs4all.nl>
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@ -8216,7 +8216,7 @@ dissect_ExpectedSubmoduleBlockReq_block(tvbuff_t *tvb, int offset,
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if((strstr(puffer, vendorIdStr)) != NULL) {
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memset (convertStr, 0, sizeof(*convertStr));
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pch = strstr(puffer, vendorIdStr);
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if (sscanf(pch, "VendorID=\"%[^\"]", convertStr) == 1) {
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if (pch!= NULL && sscanf(pch, "VendorID=\"%[^\"]", convertStr) == 1) {
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read_vendor_id = (guint32) strtoul (convertStr, NULL, 0);
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if(read_vendor_id == searchVendorID) {
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@ -8229,7 +8229,7 @@ dissect_ExpectedSubmoduleBlockReq_block(tvbuff_t *tvb, int offset,
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if((strstr(puffer, deviceIdStr)) != NULL) {
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memset(convertStr, 0, sizeof(*convertStr));
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pch = strstr(puffer, deviceIdStr);
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if (sscanf(pch, "DeviceID=\"%[^\"]", convertStr) == 1) {
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if (pch != NULL && sscanf(pch, "DeviceID=\"%[^\"]", convertStr) == 1) {
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read_device_id = (guint32)strtoul(convertStr, NULL, 0);
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if(read_device_id == searchDeviceID) {
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@ -8362,7 +8362,7 @@ dissect_ExpectedSubmoduleBlockReq_block(tvbuff_t *tvb, int offset,
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memset (convertStr, 0, sizeof(*convertStr));
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pch = strstr(temp, fParameterIndexStr);
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if (sscanf(pch, "Index=\"%[^\"]", convertStr) == 1) {
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if (pch != NULL && sscanf(pch, "Index=\"%[^\"]", convertStr) == 1) {
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io_data_object->fParameterIndexNr = (guint32)strtoul(convertStr, NULL, 0);
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}
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break; /* found Indexnumber -> break search loop */
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@ -8376,7 +8376,7 @@ dissect_ExpectedSubmoduleBlockReq_block(tvbuff_t *tvb, int offset,
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if((strstr(temp, moduleStr)) != NULL) { /* find the String "ModuleIdentNumber=" */
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memset (convertStr, 0, sizeof(*convertStr));
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pch = strstr(temp, moduleStr); /* search for "ModuleIdentNumber=\"" within GSD-file */
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if (sscanf(pch, "ModuleIdentNumber=\"%[^\"]", convertStr) == 1) { /* Change format of Value string-->numeric string */
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if (pch != NULL && sscanf(pch, "ModuleIdentNumber=\"%[^\"]", convertStr) == 1) { /* Change format of Value string-->numeric string */
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read_module_id = (guint32)strtoul(convertStr, NULL, 0); /* Change numeric string --> unsigned long; read_module_id contains the Value of the ModuleIdentNumber */
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/* If the found ModuleID matches with the wanted ModuleID, search for the Submodule and break */
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@ -8397,7 +8397,7 @@ dissect_ExpectedSubmoduleBlockReq_block(tvbuff_t *tvb, int offset,
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/* Find a String with the saved TextID and with a fitting value for it in the same line. This value is the name of the Module! */
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if(((strstr(temp, tmp_moduletext)) != NULL) && ((strstr(temp, moduleValueInfo)) != NULL)) {
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pch = strstr(temp, moduleValueInfo);
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if (sscanf(pch, "Value=\"%[^\"]", io_data_object->moduleNameStr) == 1)
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if (pch != NULL && sscanf(pch, "Value=\"%[^\"]", io_data_object->moduleNameStr) == 1)
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break; /* Found the name of the module */
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}
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}
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@ -8410,7 +8410,7 @@ dissect_ExpectedSubmoduleBlockReq_block(tvbuff_t *tvb, int offset,
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if((strstr(temp, subModuleStr)) != NULL) {
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memset (convertStr, 0, sizeof(*convertStr));
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pch = strstr(temp, subModuleStr);
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if (sscanf(pch, "SubmoduleIdentNumber=\"%[^\"]", convertStr) == 1) {
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if (pch != NULL && sscanf(pch, "SubmoduleIdentNumber=\"%[^\"]", convertStr) == 1) {
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read_submodule_id = (guint32) strtoul (convertStr, NULL, 0); /* read_submodule_id contains the Value of the SubModuleIdentNumber */
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/* Find "PROFIsafeSupported" flag of the module in GSD-file */
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