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Diffstat (limited to '')
| -rw-r--r-- | contrib/mmdarwin/mmdarwin.c | 953 |
1 files changed, 953 insertions, 0 deletions
diff --git a/contrib/mmdarwin/mmdarwin.c b/contrib/mmdarwin/mmdarwin.c new file mode 100644 index 0000000..e36dbde --- /dev/null +++ b/contrib/mmdarwin/mmdarwin.c @@ -0,0 +1,953 @@ +/* Copyright 2019 Advens + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include "config.h" +#include "rsyslog.h" +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include <signal.h> +#include <errno.h> +#include <unistd.h> +#include <stdint.h> +#include <pthread.h> +#include "conf.h" +#include "syslogd-types.h" +#include "srUtils.h" +#include "template.h" +#include "module-template.h" +#include "errmsg.h" +#include "parserif.h" +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/un.h> +#include <sys/socket.h> +#include <uuid/uuid.h> +#include <json.h> + +#include "protocol.h" /* custom file written for Darwin */ + +#define JSON_DEFAULT_CONTAINER "!mmdarwin" +#define JSON_DARWIN_ID "darwin_id" +#define INVLD_SOCK -1 +#define INITIAL_BUFFER_SIZE 32 +#define BUFFER_DEFAULT_MAX_SIZE 65536 + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("mmdarwin") + +DEFobjCurrIf(glbl) +DEF_OMOD_STATIC_DATA + +typedef struct dyn_buffer_t +{ + char *buffer; + size_t bufferAllocSize; + size_t bufferMsgSize; + size_t bufferMaxSize; +} dyn_buffer; + +/* config variables */ +typedef struct _instanceData +{ + char *pUUIDKey; /* the key to the UUID generated by an mmdarwin instance */ + char *pCertitudeKey; /* the key name to save in the enriched log + line the certitude obtained from Darwin */ + uchar *pSockName; /* the socket path of the filter which will be used by + Darwin */ + unsigned long long int filterCode; /* the filter code associated to the filter which will be used + by Darwin */ + enum darwin_filter_response_type response; /* the type of response for Darwin: no / back / darwin / both */ + struct + { + int nmemb; + char **name; + char **varname; + } fieldList; /* our keys (fields) to be extracted from the JSON-parsed log line */ + unsigned int socketMaxUse; + sbool sendPartial; +} instanceData; + +typedef struct wrkrInstanceData +{ + instanceData *pData; + int sock; /* the socket of the filter which will be used by Darwin */ + struct sockaddr_un addr; /* the sockaddr_un used to connect to the Darwin filter */ + uint8_t pktSentSocket; + dyn_buffer darwinBody; /* the body object used (and reused) to hold data to send to Darwin */ + dyn_buffer fieldBuffer; +} wrkrInstanceData_t; + +struct modConfData_s +{ + /* our overall config object */ + rsconf_t *pConf; + const char *container; +}; + +/* modConf ptr to use for the current load process */ +static modConfData_t *loadModConf = NULL; +/* modConf ptr to use for the current exec process */ +static modConfData_t *runModConf = NULL; + +/* module-global parameters */ +static struct cnfparamdescr modpdescr[] = { + {"container", eCmdHdlrGetWord, 0}, +}; +static struct cnfparamblk modpblk = + {CNFPARAMBLK_VERSION, + sizeof(modpdescr) / sizeof(struct cnfparamdescr), + modpdescr}; + +/* tables for interfacing with the v6 config system + * action (instance) parameters */ +static struct cnfparamdescr actpdescr[] = { + {"key", eCmdHdlrGetWord, CNFPARAM_REQUIRED}, + {"socketpath", eCmdHdlrGetWord, CNFPARAM_REQUIRED}, + {"fields", eCmdHdlrArray, CNFPARAM_REQUIRED}, + {"filtercode", eCmdHdlrGetWord, 0}, /* optional parameter */ + {"response", eCmdHdlrGetWord, 0}, /* optional parameter */ + {"send_partial", eCmdHdlrBinary, 0}, /* optional parameter */ + {"socket_max_use", eCmdHdlrNonNegInt, 0}, /* optional parameter - will disappear in future updates */ +}; +static struct cnfparamblk actpblk = { + CNFPARAMBLK_VERSION, + sizeof(actpdescr) / sizeof(struct cnfparamdescr), + actpdescr}; + +/* custom functions */ +#define min(a, b) \ + ({ __typeof__ (a) _a = (a); \ + __typeof__ (b) _b = (b); \ + _a < _b ? _a : _b; }) + +static rsRetVal openSocket(wrkrInstanceData_t *pWrkrData); +static rsRetVal closeSocket(wrkrInstanceData_t *pWrkrData); +static rsRetVal doTryResume(wrkrInstanceData_t *pWrkrData); + +static rsRetVal sendMsg(wrkrInstanceData_t *pWrkrData, void *msg, size_t len); +static rsRetVal receiveMsg(wrkrInstanceData_t *pWrkrData, void *response, size_t len); + +const char* get_uuid_object(smsg_t *const pMsg); +int get_field(smsg_t *const pMsg, const char *pFieldName, char **ppRetString); +int expand_buffer(dyn_buffer *pBody, size_t new_size); +int add_field_to_body(dyn_buffer *pBody, const char *field, size_t size); +int start_new_line(dyn_buffer *pBody); +int end_body(dyn_buffer *pBody); + +/* open socket to remote system + */ +static rsRetVal openSocket(wrkrInstanceData_t *pWrkrData) +{ + DEFiRet; + assert(pWrkrData->sock == INVLD_SOCK); + + if ((pWrkrData->sock = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) + { + char errStr[1024]; + int eno = errno; + DBGPRINTF("mmdarwin::openSocket:: error %d creating AF_UNIX/SOCK_STREAM: %s.\n", + eno, rs_strerror_r(eno, errStr, sizeof(errStr))); + pWrkrData->sock = INVLD_SOCK; + ABORT_FINALIZE(RS_RET_NO_SOCKET); + } + + memset(&pWrkrData->addr, 0, sizeof(struct sockaddr_un)); + pWrkrData->addr.sun_family = AF_UNIX; + strncpy(pWrkrData->addr.sun_path, (char *)pWrkrData->pData->pSockName, sizeof(pWrkrData->addr.sun_path) - 1); + + DBGPRINTF("mmdarwin::openSocket:: connecting to Darwin...\n"); + + if (connect(pWrkrData->sock, (struct sockaddr *)&pWrkrData->addr, sizeof(struct sockaddr_un)) == -1) + { + LogError(errno, RS_RET_NO_SOCKET, "mmdarwin::openSocket:: error connecting to Darwin " + "via socket '%s'", + pWrkrData->pData->pSockName); + + pWrkrData->sock = INVLD_SOCK; + ABORT_FINALIZE(RS_RET_NO_SOCKET); + } + + DBGPRINTF("mmdarwin::openSocket:: connected !\n"); +finalize_it: + if (iRet != RS_RET_OK) + { + closeSocket(pWrkrData); + } + RETiRet; +} + +/* close socket to remote system + */ +static rsRetVal closeSocket(wrkrInstanceData_t *pWrkrData) +{ + DEFiRet; + if (pWrkrData->sock != INVLD_SOCK) + { + if (close(pWrkrData->sock) != 0) + { + char errStr[1024]; + int eno = errno; + DBGPRINTF("mmdarwin::closeSocket:: error %d closing the socket: %s.\n", + eno, rs_strerror_r(eno, errStr, sizeof(errStr))); + } + pWrkrData->sock = INVLD_SOCK; + } + RETiRet; +} + +/* try to resume connection if it is not ready + */ +static rsRetVal doTryResume(wrkrInstanceData_t *pWrkrData) +{ + DEFiRet; + + DBGPRINTF("mmdarwin::doTryResume:: trying to resume\n"); + closeSocket(pWrkrData); + iRet = openSocket(pWrkrData); + + if (iRet != RS_RET_OK) + { + iRet = RS_RET_SUSPENDED; + } + + RETiRet; +} + +/* send a message via TCP + * inspired by rgehards, 2007-12-20 + */ +static rsRetVal sendMsg(wrkrInstanceData_t *pWrkrData, void *msg, size_t len) +{ + DEFiRet; + + DBGPRINTF("mmdarwin::sendMsg:: sending message to Darwin...\n"); + + if (pWrkrData->sock == INVLD_SOCK) + { + CHKiRet(doTryResume(pWrkrData)); + } + + if (pWrkrData->sock != INVLD_SOCK) + { + if (send(pWrkrData->sock, msg, len, 0) == -1) + { + char errStr[1024]; + DBGPRINTF("mmdarwin::sendData:: error while sending data: error[%d] -> %s\n", + errno, rs_strerror_r(errno, errStr, sizeof(errStr))); + iRet = RS_RET_SUSPENDED; + } + } + +finalize_it: + RETiRet; +} + +/* receive a message via TCP + * inspired by rgehards, 2007-12-20 + */ +static rsRetVal receiveMsg(wrkrInstanceData_t *pWrkrData, void *response, size_t len) +{ + DEFiRet; + + DBGPRINTF("mmdarwin::receiveMsg:: receiving message from Darwin...\n"); + + if (pWrkrData->sock == INVLD_SOCK) + { + CHKiRet(doTryResume(pWrkrData)); + } + + if (pWrkrData->sock != INVLD_SOCK) + { + if (recv(pWrkrData->sock, response, len, MSG_WAITALL) <= 0) + { + char errStr[1024]; + DBGPRINTF("mmdarwin::receiveMsg:: error while receiving data: error[%d] -> %s\n", + errno, rs_strerror_r(errno, errStr, sizeof(errStr))); + iRet = RS_RET_NONE; + } + } + +finalize_it: + RETiRet; +} + +/** + * Get the string corresponding to a field supposedly present in the provided message + * + * params: + * - pMsg: a pointer to the rsyslog message where the field should be + * - pFieldName: a nul-terminated pointer to string representing the name of the field to search for + * - ppRetString: the pointer to contain the potential return string + * + * return: 1 if a string was put in ppRetString, 0 otherwise + * + * note: the string placed in ppRetString should be freed by the caller + */ +int get_field(smsg_t *const pMsg, const char *pFieldName, char **ppRetString) +{ + DBGPRINTF("mmdarwin::get_field:: getting key '%s' in msg\n", pFieldName); + struct json_object *pJson = NULL; + char *pFieldString = NULL; + int retVal = 0; + + msgPropDescr_t propDesc; + msgPropDescrFill(&propDesc, (uchar *)pFieldName, strlen(pFieldName)); + msgGetJSONPropJSONorString(pMsg, &propDesc, &pJson, (uchar **)&pFieldString); + + if (pFieldString) + { + *ppRetString = pFieldString; + DBGPRINTF("mmdarwin::get_field:: got string\n"); + retVal = 1; + } + else if (pJson) + { + pFieldString = (char *)json_object_get_string(pJson); + if (pFieldString) + { + *ppRetString = strdup(pFieldString); + retVal = 1; + DBGPRINTF("mmdarwin::get_field:: got string from json\n"); + json_object_put(pJson); + } + } + + msgPropDescrDestruct(&propDesc); + return retVal; +} + +/** + * expands the buffer object in the dyn_buffer object + * + * params: + * - pBody: a pointer to the concerned structure to expand + * - new_size: the new size to give to the underlying buffer + * + * return: 0 if the expansion was successful, -1 otherwise + */ +int expand_buffer(dyn_buffer *pBody, size_t new_size) +{ + /* return error if new_size tries to exceed max defined size */ + if (new_size > pBody->bufferMaxSize) + return -1; + while (pBody->bufferAllocSize < new_size) + pBody->bufferAllocSize += INITIAL_BUFFER_SIZE; + + DBGPRINTF("mmdarwin::expand_buffer:: expanding buffer to %zu\n", pBody->bufferAllocSize); + + char *tmp = realloc(pBody->buffer, pBody->bufferAllocSize * sizeof(char)); + + if (!tmp) + { + DBGPRINTF("mmdarwin::expand_buffer:: could not resize buffer\n"); + return -1; + } + + pBody->buffer = tmp; + return 0; +} + +/** + * adds a field to the dyn_buffer buffer + * + * params: + * - pBody: the pointer on the dyn_buffer structure + * - field: the potentially not null-terminated string to add as a field to the dyn_buffer + * - size: the size of the string (without the '\0' character) + * + * return: 0 if the field was indeed added to the dyn_buffer, -1 otherwise + */ +int add_field_to_body(dyn_buffer *pBody, const char *field, size_t size) +{ + /* get required additional size for field, quotes, colon, and \0 + and potentially also for the beginning of the message structure */ + int beginning = (pBody->bufferMsgSize == 0) ? 2 : 0; + size_t requiredBodySize = pBody->bufferMsgSize + size + 4 + beginning; + + /* resize body buffer if necessary */ + if (requiredBodySize > pBody->bufferAllocSize) + { + if (expand_buffer(pBody, requiredBodySize) != 0) + { + return -1; + } + } + + /* add message structure beginning if current message is empty */ + if (!pBody->bufferMsgSize) + { + pBody->buffer[0] = '['; + pBody->buffer[1] = '['; + pBody->bufferMsgSize += 2; + } + + /* add field with quotes and colon */ + pBody->buffer[pBody->bufferMsgSize++] = '\"'; + memcpy((void *)&pBody->buffer[pBody->bufferMsgSize], (const void *)field, size); + pBody->bufferMsgSize += size; + pBody->buffer[pBody->bufferMsgSize++] = '\"'; + pBody->buffer[pBody->bufferMsgSize++] = ','; + + return 0; +} + +/** + * small helper function to start a new input line (used for bulk-calls) in the dyn_buffer. + * will close current line with a ']' and start the next with a '['. + * will also remove leading ',' in fields list. + * + * params: + * - pBody: the pointer on the dyn_buffer on which to start a new input line + * + * return: 0 if successful, -1 otherwise + */ +int start_new_line(dyn_buffer *pBody) +{ + /* don't if the message is empty */ + if (!pBody->bufferMsgSize) + { + return -1; + } + + DBGPRINTF("mmdarwin::start_new_line:: starting new line entry in body\n"); + + if (pBody->bufferAllocSize < pBody->bufferMsgSize + 2) + { + if (expand_buffer(pBody, pBody->bufferAllocSize + 2) != 0) + { + return -1; + } + } + + pBody->buffer[pBody->bufferMsgSize - 1] = ']'; + pBody->buffer[pBody->bufferMsgSize++] = ','; + pBody->buffer[pBody->bufferMsgSize++] = '['; + return 0; +} + +/** + * small helper function to close the dyn_buffer structure. + * will close the line list with two ']' and will remove the leading ',' in the fields list + * + * params: + * - pBody: the pointer on the dyn_buffer on which to start a new input line + * + * return: 0 if successful, -1 otherwise + */ +int end_body(dyn_buffer *pBody) +{ + /* don't if the message is empty */ + if (!pBody->bufferMsgSize) + { + return -1; + } + + DBGPRINTF("mmdarwin::end_body:: finishing body structure\n"); + + if (pBody->bufferAllocSize < pBody->bufferMsgSize + 2) + { + if (expand_buffer(pBody, pBody->bufferAllocSize + 2) != 0) + { + return -1; + } + } + + pBody->buffer[pBody->bufferMsgSize - 1] = ']'; + pBody->buffer[pBody->bufferMsgSize++] = ']'; + pBody->buffer[pBody->bufferMsgSize++] = '\0'; + return 0; +} + +/** + * Get the potential existing uuid put by previous mmdarwin call in a json + * + * params: + * - pJson: the pointer on the json + * + * return: a valid json_object pointer if found, NULL otherwise + */ +const char* get_uuid_object(smsg_t *const pMsg) { + struct json_object *mmdarwin_object = NULL; + const char *result = NULL, *key = NULL; + + msgPropDescr_t propDesc; + msgPropDescrFill(&propDesc, (uchar *)runModConf->container, strlen(runModConf->container)); + msgGetJSONPropJSON(pMsg, &propDesc, &mmdarwin_object); + + if(mmdarwin_object) { + struct json_object_iterator it = json_object_iter_begin(mmdarwin_object); + struct json_object_iterator itEnd = json_object_iter_end(mmdarwin_object); + + while(!json_object_iter_equal(&it, &itEnd)) { + key = json_object_iter_peek_name(&it); + + if(!strcmp(key, JSON_DARWIN_ID)) { + // should always be a (non-empty) null-terminated string, safe to use with strdup() + result = strdup(json_object_get_string(json_object_iter_peek_value(&it))); + break; + } + + json_object_iter_next(&it); + } + json_object_put(mmdarwin_object); + } + + msgPropDescrDestruct(&propDesc); + return result; +} + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad + loadModConf = pModConf; +pModConf->pConf = pConf; +ENDbeginCnfLoad + +BEGINendCnfLoad +CODESTARTendCnfLoad +ENDendCnfLoad + +BEGINcheckCnf +CODESTARTcheckCnf +ENDcheckCnf + +BEGINactivateCnf +CODESTARTactivateCnf + runModConf = pModConf; +ENDactivateCnf + +BEGINfreeCnf +CODESTARTfreeCnf + free((void *)pModConf->container); +ENDfreeCnf + +BEGINdbgPrintInstInfo +CODESTARTdbgPrintInstInfo + DBGPRINTF("%s\n", pData->pSockName); +ENDdbgPrintInstInfo + +BEGINcreateInstance +CODESTARTcreateInstance +ENDcreateInstance + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance + pWrkrData->pktSentSocket = 0; + pWrkrData->darwinBody.bufferAllocSize = 0; + pWrkrData->darwinBody.bufferMaxSize = BUFFER_DEFAULT_MAX_SIZE; + pWrkrData->darwinBody.bufferMsgSize = 0; + pWrkrData->sock = INVLD_SOCK; +ENDcreateWrkrInstance + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature +ENDisCompatibleWithFeature + +BEGINfreeInstance +CODESTARTfreeInstance + if (pData->fieldList.name != NULL) + { + for (int i = 0; i < pData->fieldList.nmemb; ++i) + { + free(pData->fieldList.name[i]); + free(pData->fieldList.varname[i]); + } + free(pData->fieldList.name); + free(pData->fieldList.varname); + } + free(pData->pUUIDKey); + free(pData->pCertitudeKey); + free(pData->pSockName); +ENDfreeInstance + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance + closeSocket(pWrkrData); + free(pWrkrData->darwinBody.buffer); +ENDfreeWrkrInstance + +BEGINsetModCnf +struct cnfparamvals *pvals = NULL; +int i; +CODESTARTsetModCnf + loadModConf->container = NULL; + pvals = nvlstGetParams(lst, &modpblk, NULL); + if (pvals == NULL) + { + LogError(0, RS_RET_MISSING_CNFPARAMS, + "mmdarwin: error processing module config parameters missing [module(...)]"); + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + if (Debug) + { + DBGPRINTF("mmdarwin::setModCnf:: module (global) param blk for mmdarwin:\n"); + cnfparamsPrint(&modpblk, pvals); + } + + for (i = 0; i < modpblk.nParams; ++i) + { + if (!pvals[i].bUsed) + continue; + if (!strcmp(modpblk.descr[i].name, "container")) + { + loadModConf->container = es_str2cstr(pvals[i].val.d.estr, NULL); + if(loadModConf->container[0] != '!' && loadModConf->container[0] != '.') { + LogError(0, RS_RET_INVALID_PARAMS, "mmdarwin: container should either" + " begin with '!' or '.'\n"); + ABORT_FINALIZE(RS_RET_INVALID_PARAMS); + } + } + else + { + DBGPRINTF("mmdarwin::setModCnf:: program error, non-handled " + "param '%s'\n", + modpblk.descr[i].name); + } + } + + if (loadModConf->container == NULL) + { + CHKmalloc(loadModConf->container = strdup(JSON_DEFAULT_CONTAINER)); + } + +finalize_it : + if (pvals != NULL) + cnfparamvalsDestruct(pvals, &modpblk); +ENDsetModCnf + +static inline void setInstParamDefaults(instanceData *pData) +{ + DBGPRINTF("mmdarwin::setInstParamDefaults::\n"); + pData->pUUIDKey = NULL; + pData->pCertitudeKey = NULL; + pData->pSockName = NULL; + pData->fieldList.nmemb = 0; + pData->filterCode = DARWIN_FILTER_CODE_NO; + pData->response = DARWIN_RESPONSE_SEND_NO; + pData->socketMaxUse = 0; + pData->sendPartial = 0; +} + +BEGINnewActInst + struct cnfparamvals *pvals; + int i; +CODESTARTnewActInst + DBGPRINTF("mmdarwin::newActInst::\n"); + if ((pvals = nvlstGetParams(lst, &actpblk, NULL)) == NULL) + { + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + CODE_STD_STRING_REQUESTnewActInst(1) + CHKiRet(OMSRsetEntry(*ppOMSR, 0, NULL, OMSR_TPL_AS_MSG)); + CHKiRet(createInstance(&pData)); + setInstParamDefaults(pData); + + for (i = 0; i < actpblk.nParams; ++i) + { + if (!pvals[i].bUsed) + continue; + + if (!strcmp(actpblk.descr[i].name, "key")) + { + char *key = es_str2cstr(pvals[i].val.d.estr, NULL); + char vnamebuf[1024]; + snprintf(vnamebuf, sizeof(vnamebuf), "%s!%s", loadModConf->container, key); + CHKmalloc(pData->pCertitudeKey = strdup(vnamebuf)); + free(key); + DBGPRINTF("mmdarwin::newActInst:: certitudeKey is %s\n", pData->pCertitudeKey); + } + else if (!strcmp(actpblk.descr[i].name, "socketpath")) + { + pData->pSockName = (uchar *)es_str2cstr(pvals[i].val.d.estr, NULL); + DBGPRINTF("mmdarwin::newActInst:: sockName is %s\n", pData->pSockName); + } + else if (!strcmp(actpblk.descr[i].name, "socket_max_use")) + { + pData->socketMaxUse = (uint32_t)pvals[i].val.d.n; + DBGPRINTF("mmdarwin::newActInst:: socketMaxUse is %d\n", pData->socketMaxUse); + } + else if (!strcmp(actpblk.descr[i].name, "send_partial")) + { + pData->sendPartial = (sbool)pvals[i].val.d.n; + if (pData->sendPartial) + { + DBGPRINTF("mmdarwin::newActInst:: sending bodies even if fields are missing\n"); + } + else + { + DBGPRINTF("mmdarwin::newActInst:: only sending complete bodies\n"); + } + } + else if (!strcmp(actpblk.descr[i].name, "response")) + { + char *response = es_str2cstr(pvals[i].val.d.estr, NULL); + + if (!strcmp(response, "no")) + { + pData->response = DARWIN_RESPONSE_SEND_NO; + DBGPRINTF("mmdarwin::newActInst:: response type is 'no'\n"); + } + else if (!strcmp(response, "back")) + { + pData->response = DARWIN_RESPONSE_SEND_BACK; + DBGPRINTF("mmdarwin::newActInst:: response type is 'back'\n"); + } + else if (!strcmp(response, "darwin")) + { + pData->response = DARWIN_RESPONSE_SEND_DARWIN; + DBGPRINTF("mmdarwin::newActInst:: response type is 'darwin'\n"); + } + else if (!strcmp(response, "both")) + { + pData->response = DARWIN_RESPONSE_SEND_BOTH; + DBGPRINTF("mmdarwin::newActInst:: response type is 'both'\n"); + } + else + { + DBGPRINTF( + "mmdarwin::newActInst:: invalid 'response' value: %s. 'No response' set.\n", + response); + + pData->response = DARWIN_RESPONSE_SEND_NO; + DBGPRINTF("mmdarwin::newActInst:: response type is 'no'\n"); + } + + free(response); + } + else if (!strcmp(actpblk.descr[i].name, "filtercode")) + { + char *filterCode = es_str2cstr(pvals[i].val.d.estr, NULL); + pData->filterCode = strtoull(filterCode, NULL, 16); + free(filterCode); + } + else if (!strcmp(actpblk.descr[i].name, "fields")) + { + pData->fieldList.nmemb = pvals[i].val.d.ar->nmemb; + CHKmalloc(pData->fieldList.name = calloc(pData->fieldList.nmemb, sizeof(char *))); + CHKmalloc(pData->fieldList.varname = calloc(pData->fieldList.nmemb, sizeof(char *))); + + for (int j = 0; j < pData->fieldList.nmemb; ++j) + { + char *const param = es_str2cstr(pvals[i].val.d.ar->arr[j], NULL); + char *varname = NULL; + char *name; + if (*param == ':') + { + char *b = strchr(param + 1, ':'); + if (b == NULL) + { + parser_errmsg( + "mmdarwin::newActInst:: missing closing colon: '%s'", param); + ABORT_FINALIZE(RS_RET_ERR); + } + + *b = '\0'; /* split name & varname */ + varname = param + 1; + name = b + 1; + } + else + { + name = param; + } + CHKmalloc(pData->fieldList.name[j] = strdup(name)); + char vnamebuf[1024]; + snprintf(vnamebuf, sizeof(vnamebuf), + "%s!%s", loadModConf->container, + (varname == NULL) ? name : varname); + CHKmalloc(pData->fieldList.varname[j] = strdup(vnamebuf)); + free(param); + DBGPRINTF("mmdarwin::newActInst:: will look for field %s\n", pData->fieldList.name[j]); + } + } + else + { + DBGPRINTF( + "mmdarwin::newActInst:: program error, non-handled param '%s'\n", actpblk.descr[i].name); + } + } + + // reserve space for 'container!key\0' + size_t sizeKey = strlen(loadModConf->container) + strlen(JSON_DARWIN_ID) + 2; + pData->pUUIDKey = malloc(sizeKey); + snprintf(pData->pUUIDKey, sizeKey, "%s!%s", loadModConf->container, JSON_DARWIN_ID); + DBGPRINTF("mmdarwin:: uuid key is %s\n", pData->pUUIDKey); + +CODE_STD_FINALIZERnewActInst + cnfparamvalsDestruct(pvals, &actpblk); +ENDnewActInst + +BEGINtryResume +CODESTARTtryResume + iRet = doTryResume(pWrkrData); +ENDtryResume + +BEGINdoAction_NoStrings + smsg_t **ppMsg = (smsg_t **)pMsgData; /* the raw data */ + smsg_t *pMsg = ppMsg[0]; /* the raw log line */ + instanceData *pData = pWrkrData->pData; /* the parameters given for the plugin */ + char *pFieldValue = NULL; /* ponter to the found field value */ + int fieldsNum = 0; /* number of fields retrieved */ + +CODESTARTdoAction + DBGPRINTF("mmdarwin::doAction:: beggining action\n"); + pWrkrData->darwinBody.bufferMsgSize = 0; + fieldsNum = 0; + + for (int i = 0; i < pData->fieldList.nmemb; i++) + { + DBGPRINTF("mmdarwin::doAction:: processing field '%s'\n", pData->fieldList.name[i]); + pFieldValue = NULL; + + /* case 1: static field. We simply forward it to Darwin */ + if (pData->fieldList.name[i][0] != '!' && pData->fieldList.name[i][0] != '.') + { + pFieldValue = strdup(pData->fieldList.name[i]); + } + /* case 2: dynamic field. We retrieve its value from the JSON logline and forward it to + * Darwin */ + else + { + if (!get_field(pMsg, pData->fieldList.name[i], &pFieldValue)) + { + DBGPRINTF("mmdarwin::doAction:: \ +could not extract field '%s' from message\n", pData->fieldList.name[i]); + continue; + } + } + + DBGPRINTF( + "mmdarwin::doAction:: got value of field '%s': '%s'\n", pData->fieldList.name[i], pFieldValue); + + if (add_field_to_body(&(pWrkrData->darwinBody), pFieldValue, strlen(pFieldValue)) != 0) + { + DBGPRINTF("mmdarwin::doAction:: could not add field to body, aborting\n"); + free(pFieldValue); + ABORT_FINALIZE(RS_RET_ERR); + } + + fieldsNum++; + free(pFieldValue); + } + + if (fieldsNum) + { + if (!pData->sendPartial && fieldsNum != pData->fieldList.nmemb) + { + DBGPRINTF("mmdarwin::doAction:: not all fields could be retrieved, not sending partial message." + " (if you wish to send partial messages anyway, set 'send_partial' to 'on' in instance parameters)\n"); + FINALIZE; + } + if (end_body(&(pWrkrData->darwinBody)) != 0) + ABORT_FINALIZE(RS_RET_ERR); + } + else + { + DBGPRINTF("mmdarwin::doAction:: no fields retrieved, finalizing\n"); + FINALIZE; + } + + DBGPRINTF("mmdarwin::doAction:: body to send: '%s'\n", pWrkrData->darwinBody.buffer); + + if (pData->socketMaxUse) + { + /* need to rotate socket connections */ + if (!pWrkrData->pktSentSocket) + { + DBGPRINTF("mmdarwin::doAction:: opening a new connection\n"); + CHKiRet(doTryResume(pWrkrData)); + } + pWrkrData->pktSentSocket = (pWrkrData->pktSentSocket + 1) % pData->socketMaxUse; + } + + /* the Darwin header to be sent to the filter */ + darwin_filter_packet_t header = { + .type = DARWIN_PACKET_OTHER, + .response = pData->response, + .filter_code = pData->filterCode, + .body_size = pWrkrData->darwinBody.bufferMsgSize}; + + const char *uuid = get_uuid_object(pMsg); + if(uuid) { + DBGPRINTF("mmdarwin: using existing UUID = %s\n", uuid); + if(uuid_parse(uuid, header.evt_id)) + LogError(0, RS_RET_ERR, "mmdarwin:: failed to parse existing UUID: %s\n", uuid); + free((void*)uuid); + } + else { + uuid_generate(header.evt_id); + char uuidStr[40]; + uuid_unparse(header.evt_id, uuidStr); + DBGPRINTF("mmdarwin: generated new UUID = %s\n", uuidStr); + msgAddJSON(pMsg, (uchar *)pData->pUUIDKey, json_object_new_string(uuidStr), 0, 0); + } + + DBGPRINTF("mmdarwin::doAction:: sending header to Darwin\n"); + CHKiRet(sendMsg(pWrkrData, &header, sizeof(darwin_filter_packet_t))); + + DBGPRINTF("mmdarwin::doAction:: sending body to Darwin\n"); + CHKiRet(sendMsg(pWrkrData, (void *)(pWrkrData->darwinBody.buffer), pWrkrData->darwinBody.bufferMsgSize)); + + /* there is no need to wait for a response that will never come */ + if (pData->response == DARWIN_RESPONSE_SEND_NO || pData->response == DARWIN_RESPONSE_SEND_DARWIN) + { + DBGPRINTF("mmdarwin::doAction:: no response will be sent back " + "(darwin response type is set to 'no' or 'darwin')\n"); + goto finalize_it; + } + + darwin_filter_packet_t response; + memset(&response, 0, sizeof(response)); + DBGPRINTF("mmdarwin::doAction:: receiving from Darwin\n"); + CHKiRet(receiveMsg(pWrkrData, &response, sizeof(response))); + + unsigned int certitude = response.certitude_list[0]; + DBGPRINTF("mmdarwin::doAction:: end of the transaction, certitude is %d\n", certitude); + + msgAddJSON(pMsg, (uchar *)pData->pCertitudeKey, json_object_new_int(certitude), 0, 0); + +finalize_it : + DBGPRINTF("mmdarwin::doAction:: finished processing log line\n"); + +ENDdoAction + +NO_LEGACY_CONF_parseSelectorAct + +BEGINmodExit +CODESTARTmodExit + objRelease(glbl, CORE_COMPONENT); +ENDmodExit + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMOD_QUERIES +CODEqueryEtryPt_STD_OMOD8_QUERIES +CODEqueryEtryPt_STD_CONF2_setModCnf_QUERIES +CODEqueryEtryPt_STD_CONF2_OMOD_QUERIES +CODEqueryEtryPt_STD_CONF2_QUERIES +ENDqueryEtryPt + +BEGINmodInit() +CODESTARTmodInit + /* we only support the current interface specification */ + *ipIFVersProvided = CURR_MOD_IF_VERSION; +CODEmodInit_QueryRegCFSLineHdlr + DBGPRINTF("mmdarwin::modInit:: module compiled with rsyslog version %s.\n", VERSION); + CHKiRet(objUse(glbl, CORE_COMPONENT)); +ENDmodInit |