191 lines
4.9 KiB
C
191 lines
4.9 KiB
C
#include "validatexml.h"
|
|
#include <string.h>
|
|
#include <ctype.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
#define MAX_RECORDS 1000
|
|
#define MAX_LINE_LEN 0xffff
|
|
#define MAX_NAME_LEN 32
|
|
|
|
static void unencode(const char *src, char *dest)
|
|
{
|
|
for (; *src; src++, dest++) {
|
|
if (*src == '+')
|
|
*dest = ' ';
|
|
else if (*src == '%') {
|
|
int code;
|
|
if (sscanf(src+1, "%2x", &code) != 1)
|
|
code = '?';
|
|
if (code == '%' && isxdigit(src[3]) && isxdigit(src[4])) {
|
|
src += 2;
|
|
sscanf(src+1, "%2x", &code);
|
|
}
|
|
*dest = code;
|
|
src += 2;
|
|
} else
|
|
*dest = *src;
|
|
}
|
|
*dest = '\0';
|
|
}
|
|
|
|
int readdata(char * * const data, int sz)
|
|
{
|
|
FILE *f = fopen("data.txt", "rt");
|
|
if (!f)
|
|
return 0; // failed
|
|
|
|
char line[MAX_LINE_LEN] = {0};
|
|
int i = 0;
|
|
while (i < sz && fgets(line,sizeof(line)-2,f)) {
|
|
if (strncmp(line, "name=", 5) == 0) {
|
|
int len = strlen(line);
|
|
while (line[len-1] == '\n' || line[len-1] == '\r' || line[len-1] == '\t' || line[len-1] == ' ')
|
|
line[--len] = '\0';
|
|
data[i] = malloc(len);
|
|
strcpy(data[i], line);
|
|
i++;
|
|
}
|
|
}
|
|
fclose(f);
|
|
|
|
return 1; // success
|
|
}
|
|
|
|
const char * getname(const char *data)
|
|
{
|
|
static char name[32];
|
|
if (strncmp(data,"name=",5) != 0)
|
|
return NULL;
|
|
int i = 0;
|
|
while (i < sizeof(name) && data[i+5] && data[i+5] != '&') {
|
|
name[i] = data[i+5];
|
|
i++;
|
|
}
|
|
if (i >= sizeof(name))
|
|
return NULL;
|
|
while (i < sizeof(name))
|
|
name[i++] = 0;
|
|
return name;
|
|
}
|
|
|
|
int getversion(const char *data)
|
|
{
|
|
const char *name = getname(data);
|
|
if (name == NULL)
|
|
return 0; // invalid string => 0
|
|
data = data + strlen("name=") + strlen(name);
|
|
if (strncmp(data,"&version=",9) != 0)
|
|
return 1; // no version => 1
|
|
data = data + 9;
|
|
int ret = 0;
|
|
while (isdigit(*data)) {
|
|
ret = ret * 10 + *data - '0';
|
|
data++;
|
|
}
|
|
if (*data != '\0' && *data != '&')
|
|
return -1; // invalid version => -1
|
|
return ret;
|
|
}
|
|
|
|
void sortdata(char * * const data, int sz)
|
|
{
|
|
for (int i = 1; i < sz && data[i]; i++) {
|
|
if (strcmp(data[i-1], data[i]) > 0) {
|
|
char *p = data[i-1];
|
|
data[i-1] = data[i];
|
|
data[i] = p;
|
|
if (i >= 2)
|
|
i -= 2;
|
|
}
|
|
}
|
|
}
|
|
|
|
void generatepage(const char msg[])
|
|
{
|
|
puts("Content-type: text/html\r\n\r\n");
|
|
puts("<html>");
|
|
puts("<head><script type=\"text/javascript\">");
|
|
puts("function ok() { window.location = \"http://cppcheck.sourceforge.net/archive/\"; }");
|
|
puts("</script></head>");
|
|
puts("<body>");
|
|
puts(msg);
|
|
puts("<br /><input type=\"button\" value=\"OK\" onclick=\"ok()\"></body></html>");
|
|
}
|
|
|
|
|
|
const char *validate_name_version(const char *data)
|
|
{
|
|
int i = 0;
|
|
|
|
// name
|
|
if (strncmp(data,"name=",5) != 0)
|
|
return "invalid query string: must start with 'name='";
|
|
i += 5;
|
|
if (!isalnum(data[i]))
|
|
return "invalid query string: no name / invalid character in name";
|
|
while (isalnum(data[i]))
|
|
i++;
|
|
if (i > 35)
|
|
return "invalid query string: max name size is 32";
|
|
|
|
// version
|
|
if (strncmp(&data[i], "&version=", 9) != 0)
|
|
return "invalid query string: 'version=' not seen at the expected location";
|
|
i += strlen("&version=");
|
|
if (!isdigit(data[i]))
|
|
return "invalid query string: version must consist of digits 0-9";
|
|
while (isdigit(data[i]))
|
|
i++;
|
|
|
|
// end
|
|
if (data[i] != '\0')
|
|
return "invalid query";
|
|
|
|
return NULL;
|
|
}
|
|
|
|
const char *validate_name_version_data(const char *data)
|
|
{
|
|
int i = 0;
|
|
|
|
// name
|
|
if (strncmp(data,"name=",5) != 0)
|
|
return "invalid query string: must start with 'name='";
|
|
i += 5;
|
|
if (!isalnum(data[i]))
|
|
return "invalid query string: no name / invalid character in name";
|
|
while (isalnum(data[i]))
|
|
i++;
|
|
if (i > 35)
|
|
return "invalid query string: max name size is 32";
|
|
|
|
// version
|
|
if (strncmp(&data[i], "&version=", 9) != 0)
|
|
return "invalid query string: 'version=' not seen at the expected location";
|
|
i += strlen("&version=");
|
|
if (!isdigit(data[i]))
|
|
return "invalid query string: version must consist of digits 0-9";
|
|
while (isdigit(data[i]))
|
|
i++;
|
|
|
|
// filedata
|
|
if (strncmp(data+i, "&data=", 6) != 0)
|
|
return "invalid query string: 'data=' not seen at the expected location";
|
|
i += 6;
|
|
|
|
// validate xml
|
|
char xmldata[strlen(data+i)];
|
|
memset(xmldata, 0, strlen(data+i));
|
|
unencode(data+i, xmldata);
|
|
const int badline = validatexml(xmldata);
|
|
if (badline >= 1) {
|
|
static char buf[256];
|
|
sprintf(buf, "Invalid query: Invalid XML at line %i\n", badline);
|
|
return buf;
|
|
}
|
|
|
|
// No error
|
|
return NULL;
|
|
}
|