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/server.c Secret

Created Aug 29, 2016
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server.c - shared from CS50 IDE
/**
* Parses a request-line, storing its absolute-path at abs_path
* and its query string at query, both of which are assumed
* to be at least of length LimitRequestLine + 1.
*/
bool parse(const char* line, char* abs_path, char* query)
{
int length = strlen(line);
char buffer[length + 1];
strcpy(buffer, line);
int space_ctr = 0;
int spec_char_ctr = 0;
int j = 0;
while(j < length+1)
{
if (buffer[j] == ' ')
{
space_ctr++;
if(buffer[j+1] == ' ')
{
error(400);
return false;
}
}
if (buffer[j] == '\r' && buffer[j+1] == '\n')
{
spec_char_ctr++;
break;
}
j++;
}
if (space_ctr != 2)
{
error(400);
return false;
}
if (spec_char_ctr != 1)
{
error(400);
return false;
}
//ensure correct method is used
if(buffer[0] != 'G' || buffer[1] != 'E' || buffer[2] != 'T' || buffer[3] !=' ')
{
error(405);
return false;
}
//ensure that request-target starts with a /
if (buffer[4] != '/')
{
error(501);
return false;
}
//ensure on quotation marks(") in the request-target
int i = 4;
while (buffer[i] != ' ')
{
if (buffer[i] == '\"')
{
error(400);
return false;
}
i++;
}
char* http_add = strrchr(buffer, 32);
if (http_add[1] !='H' || http_add[2] != 'T' || http_add[3] != 'T' || http_add[4] != 'P' || http_add[5] != '/' ||
http_add[6] != '1' || http_add[7] != '.' || http_add[8] != '1' || http_add[9] != '\r' || http_add[10] != '\n')
{
error(505);
return false;
}
int k = 4;
char buffer2[strlen(line) + 1];
char buffer3[strlen(line) + 1];
int indic = 0;
int when = 0;
while(buffer[k] != ' ')
{
if (buffer[k] == '?' && indic == 0)
{
indic = 1;
}
else if ( indic == 0)
{
buffer2[k-4] = buffer[k];
}
else
{
buffer3[when] = buffer[k];
when++;
}
k++;
}
buffer2[k - 2 - when] = '\0';
buffer3[when] = '\0';
strcpy(abs_path, buffer2);
if (indic == 1)
{
strcpy(query , buffer3);
}
else
{
query[0] = '\0';
}
return true;
}
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