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100 lines
1.9 KiB
100 lines
1.9 KiB
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#include "AmSipMsg.h"
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string getHeader(const string& hdrs,const string& hdr_name)
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{
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size_t pos1;
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size_t pos2;
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size_t pos_s;
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if (findHeader(hdrs,hdr_name, pos1, pos2, pos_s))
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return hdrs.substr(pos1,pos2-pos1);
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else
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return "";
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}
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string getHeader(const string& hdrs,const string& hdr_name,
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const string& compact_hdr_name)
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{
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string res = getHeader(hdrs, hdr_name);
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if (!res.length())
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return getHeader(hdrs, compact_hdr_name);
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return res;
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}
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bool findHeader(const string& hdrs,const string& hdr_name,
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size_t& pos1, size_t& pos2, size_t& hdr_start)
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{
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unsigned int p;
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char* hdr = strdup(hdr_name.c_str());
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const char* hdrs_c = hdrs.c_str();
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char* hdr_c = hdr;
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const char* hdrs_end = hdrs_c + hdrs.length();
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const char* hdr_end = hdr_c + hdr_name.length();
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while(hdr_c != hdr_end){
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if('A' <= *hdr_c && *hdr_c <= 'Z')
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*hdr_c -= 'A' - 'a';
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hdr_c++;
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}
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while(hdrs_c != hdrs_end){
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hdr_c = hdr;
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while((hdrs_c != hdrs_end) && (hdr_c != hdr_end)){
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char c = *hdrs_c;
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if('A' <= *hdrs_c && *hdrs_c <= 'Z')
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c -= 'A' - 'a';
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if(c != *hdr_c)
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break;
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hdr_c++;
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hdrs_c++;
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}
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if(hdr_c == hdr_end)
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break;
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while((hdrs_c != hdrs_end) && (*hdrs_c != '\n'))
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hdrs_c++;
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if(hdrs_c != hdrs_end)
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hdrs_c++;
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}
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if(hdr_c == hdr_end){
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hdr_start = hdrs_c - hdrs.c_str();;
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while((hdrs_c != hdrs_end) && (*hdrs_c == ' '))
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hdrs_c++;
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if((hdrs_c != hdrs_end) && (*hdrs_c == ':')){
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hdrs_c++;
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while((hdrs_c != hdrs_end) && (*hdrs_c == ' '))
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hdrs_c++;
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p = hdrs_c - hdrs.c_str();
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string::size_type p_end;
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if( ((p_end = hdrs.find('\r',p)) != string::npos)
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|| ((p_end = hdrs.find('\n',p)) != string::npos) ){
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free(hdr);
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// return hdrs.substr(p,p_end-p);
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pos1 = p;
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pos2 = p_end;
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return true;
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}
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}
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}
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free(hdr);
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// return "";
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return false;
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}
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