C + + Wisdom Note (6): Socket client API interface for sending message acceptance messages

#define _crt_secure_no_warnings#include "stdio.h" #include "stdlib.h" #include "string.h" #include "itcast_comm.h" # Include "Memwatch.h" #include "itcastlog.h"/* The following defines a set of API interfaces for the socket client to send packet acceptance messages write out the calling method of the interface API *//*1 first the basic framework for version Management 2 Memory Leak Check 3rd Log 4 version optimization *///develop the underlying library (development interface), providing a mechanism rather than a specific strategy. Dynamic library becomes framework//1 third party business portal comes in//2 cryptographic decryption business model abstraction//implement dynamic library encryption decrypt business model abstract typedef INT (*encdata) (unsigned char *indata,int indatalen,unsi gned Char *outdata,int *outdatalen,void *ref, int reflen); typedef int (*decdata) (unsigned char *indata,int indatalen,unsi gned Char *outdata,int *outdatalen,void *ref, int reflen); typedef struct_sck_handle{charversion[16];charserverip[16];intserverport;unsigned char *buf; int buflen; Encdata myencdatafunc;void *encref;int encreflen;decdata mydecdatafunc;void *decref;int DecRefLen;}Sck_handle; The abstract type is _sck_handle, and the object instance is Sck_handleClient initialization itcast_func_export (int) cltsocketinit (void **handle)//5day after{Sck_handle 　  *sh = NULL; int rv = 0; Itcast_log (__file__, __line__,loglevel[1], RV, "func cltsocketinit () Begin");if (handle = = NULL){RV =-1;Itcast_log (__file__, __line__,loglevel[4], RV, "Func cltsocketinit (): check handle = = NULL [%d]", RV);return RV;}//allocating memory and initializing SH =(Sck_handle *) malloc (sizeof (Sck_handle));if (sh = = NULL) {RV = -2;itcast_log (__file__, __line__,loglevel[4], RV, "Func cltsocketinit (): malloc err [%d]", RV); return RV;}memset (SH, 0, sizeof (sck_handle));Domain Assignment strcpy (sh->version, "0.0.1"); strcpy (Sh->serverip, "192.168.0.211"); Sh->serverport = 8888;//Outgoing*handle = sh;Itcast_log (__file__, __line__,loglevel[1], RV, "func cltsocketinit () End");return RV;}//Client Sender itcast_func_export (int)Cltsocketsend(void *handle, unsigned char *buf, int buflen) {INTRV = 0; Sck_handle *sh = null;if (HANDLE = = NULL) {RV = -4;itcast_log (__file__, __line__,loglevel[4], RV, "Func cltsocketsend (): Ch Eck handle = = NULL [%d] ", RV); return RV;}if (buf = = NULL | | buflen<=0){RV = -5;itcast_log (__file__, __line__,loglevel[4], RV, "Func cltsocketsend (): (buf = = NULL | | len<=0) [%d]", RV); return RV;} sh = (Sck_handle *) HANDLE; sh->buf = (unsigned char *)malloc (sizeof (char) *buflen + +);if (sh->buf = = NULL) {RV = -6;itcast_log (__file__, __line__,loglevel[4], RV, "func cltsocketsend () buflen:%d)", Buflen) ; Itcast_log (__file__, __line__,loglevel[4], RV, func cltsocketsend () check (handle->buf = NULL)) [%d] ", RV); return RV;} if (sh->myencdatafunc! = NULL) {//Return to call the third-party vendor's cryptographic Business RV =Sh->myencdatafunc (buf, Buflen, Sh->buf, &sh->buflen, Sh->encref, Sh->encreflen);if (rv! = 0) {itcast_log (__file__, __line__,loglevel[4], RV, "Sh->myencdatafunc (buf, Buflen, Sh->buf, &sh-> Buflen):%d) ", Buflen); return rv;}} else{//sends the message data stored in the handle context memcpy (Sh->buf, buf, buflen); sh->buflen = Buflen;} return RV;} Second notation for callback functions//client-side itcast_func_export (int) cltsocketsend_enc (void *handle, unsigned char *buf, int buflen, Encdata Encdatacallbakfunc, void *ref, int reflen) {INTRV = 0; Sck_handle*sh = null;if (HANDLE = = NULL) {RV = -4;itcast_log (__file__, __line__,loglevel[4], RV, "Func cltsocketsend (): Che CK handle = = NULL [%d] ", RV); return RV;}  if (buf = = NULL | | buflen<=0) {RV = -5;itcast_log (__file__, __line__,loglevel[4], RV, "Func cltsocketsend (): (BUF = = NULL || len<=0) [%d] ", RV); return RV;} SH = (Sck_handle *) Handle;sh->buf = (unsigned char *) malloc (sizeof (char) *buflen + N); if (sh->buf = = NULL) {RV =-6; Itcast_log (__file__, __line__,loglevel[4], RV, "func cltsocketsend () buflen:%d)", Buflen); Itcast_log (__FILE__, __LINE __,loglevel[4], RV, "funC Cltsocketsend () check (Handle->buf = = NULL)) [%d] ", RV); return RV; if (encdatacallbakfunc! = NULL) {//Return to call the third-party vendor's cryptographic Business RV = Encdatacallbakfunc (buf, Buflen, Sh->buf, &sh->buflen, Ref, Reflen); if (rv! = 0) {itcast_log (__file__, __line__,loglevel[4], RV, Encdatacallbak (buf, Buflen, Sh->buf, & Sh->buflen):%d) ", Buflen); return rv;}} else{//sends the message data stored in the handle context memcpy (Sh->buf, buf, buflen); sh->buflen = Buflen;} return RV;} Client ticker Itcast_func_export (int)Cltsocketrev (void *handle, unsigned char *buf, int *buflen){INTRV = 0; Sck_handle*sh = NULL;if (handle = = NULL){RV = -4;itcast_log (__file__, __line__,loglevel[4], RV, "func cltsocketrev:check handle = = NULL [%d]", RV); return RV;}if (Buflen = = NULL){RV = -5;itcast_log (__file__, __line__,loglevel[4], RV, "func cltsocketrev: (Buflen = = NULL) [%d]", RV); return RV;}sh = (Sck_handle *) HANDLE;Assignment to the context of the data, copy into the BUF space//support two calls, the first call to find the length of the second call can be the data copy buf in the IF (buf! = NULL) {memcpy (buf, Sh->buf, Sh->buflen) ;//buf[ci->buflen] = ' n ';} *buflen = Sh->buflen;return RV;} Client frees resource itcast_func_export (int)cltsocketdestory (void *handle){ Sck_handle *sh = Null;sh = HANDLE; if (sh = null) {free (SH-&GT;BUF); if (sh->encref! = null) {free (sh->encref);} if (sh->decref! = NULL) {free (sh->decref);} Free (SH);} return 0;} The second set of APIs implements///////////////////////////////////////////////////client initialization itcast_func_export (int) CltSocketInit2 (void **handle)//5day after{sck_handle*sh = NULL;INTRV = 0;itcast_log (__file__, __line__,loglevel[1], RV , "Func cltSocketInit2 () Begin"), if (handle = = NULL) {RV = -1;itcast_log (__file__, __line__,loglevel[4], RV, "func CltSocketInit2 (): check handle = = NULL [%d] ", RV); return RV;} Allocates memory and initializes sh = (Sck_handle *) malloc (sizeof (sck_handle)); if (sh = = NULL) {RV = -2;itcast_log (__file__, __line__,loglevel[ 4], RV, "Func cltSocketInit2 (): malloc err [%d]", RV); return RV; memset (SH, 0, sizeof (sck_handle));//Field Assignment strcpy (sh->version, "0.0.1"); strcpy (Sh->serverip, "192.168.0.211"); Sh->serverport = 8888;//Outgoing *handle = Sh;itcast_log (__file__, __line__,loglevel[1], RV, "func cltSocketInit2 () End"); return RV;} Client sender itcast_func_export (int)CltSocketSend2 (void *handle, unsigned char *buf, int buflen) {INTRV = 0; Sck_handle*sh = null;if (HANDLE = = NULL) {RV = -4;itcast_log (__file__, __line__,loglevel[4], RV, "Func cltSocketSend2 (): Ch Eck handle = = NULL [%d] ", RV); return RV;} if (buf = = NULL | | buflen<=0) {RV = -5;itcast_log (__file__, __line__,loglevel[4], RV, "Func CltSocketSend2 (): (buf = = NUL L | | len<=0) [%d] ", RV); return RV;} SH = (Sck_handle *) Handle;sh->buf = (unsigned char *) malloc (sizeof (char) *buflen), if (sh->buf = = NULL) {RV = -6;itcast _log (__file__, __line__,loglevel[4], RV, "func cltSocketSend2 () buflen:%d)", Buflen), Itcast_log (__file__, __line__, Loglevel[4], RV, "func cltSocketSend2 () check (Handle->buf = = NULL)) [%d]", RV); return RV; Send the message data stored in the handle context memcpy (Sh->buf, buf, buflen); sh->buflen = Buflen;return rv;} Client ticker itcast_func_export (int) cltSocketRev2 (void *handle, unsigned char **buf, int *buflen) {INTRV = 0; Sck_handle*sh = null;if (HANDLE = = NULL) {RV = -4;itcast_log (__file__, __line__,logLevel[4], RV, "func cltsocketrev2:check handle = = NULL [%d]", RV); return RV;} if (Buflen = = null) {RV = -5;itcast_log (__file__, __line__,loglevel[4], RV, "func cltSocketRev2: (Buflen = = null) [%d]", RV) ; return RV;} SH = (Sck_handle *) handle;//allocates memory data outgoing *BUF = (char *) malloc (Sh->buflen); if (*buf = = NULL) {RV = -6;itcast_log (__file__, __ Line__,loglevel[4], RV, "func cltSocketRev2: (Buflen = = NULL) [%d]", RV); return RV;} memcpy (*buf, Sh->buf, sh->buflen); *buflen = Sh->buflen;return rv;}  Itcast_func_export (int) cltsocketrev2_free (unsigned char **buf) {int RV = 0;unsigned char * tmp = *buf;if (buf = = NULL) {RV = -7;itcast_log (__file__, __line__,loglevel[4], RV, "func cltSocketRev2: (Buflen = = NULL) [%d]", RV); return RV;} if (tmp! = NULL) {free (TMP);} *buf = NULL;} Client frees resource itcast_func_export (int) cltSocketDestory2 (void **handle) {Sck_handle *sh = Null;sh = *handle; if (sh! = NULL) { Free (SH-&GT;BUF), free (SH);} *handle = Null;return 0;} Implementation of the upper application encryption interface entry address into the dynamic library inside __declspec (dllexport) intclitsocket_sEtencfunc (void *handle, Encdata encdatacallbak, void *ref, int reflen) {Sck_handle *sh = Null;sh = handle; if (handle = = NU LL) {return-1;} Sh->myencdatafunc = encdatacallbak;if (Reflen > 0) {sh->encref = (void *) malloc (Reflen); if (sh->encref = = NULL ) {return-2;} memcpy (Sh->encref, ref, Reflen); sh->encreflen = Reflen;}  return 0;} __declspec (dllexport) intclitsocket_setdecfunc (void *handle, Encdata decdatacallbak, void *ref, int reflen) {}

　　

C + + Wisdom Note (6): Socket client API interface for sending message acceptance messages