cppcheck/htdocs/archive/setfiledata.c

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "webarchive.h"
const char *validate(const char *data)
{
int i;
// name
if (strncmp(data,"name=",5) != 0)
return "invalid query string: must start with 'name='";
i = 5;
while (isalnum(data[i]))
i++;
if (i == 5)
return "invalid query string: no name";
if (i > 35)
return "invalid query string: max name size is 32";
// filedata
if (strncmp(data+i, "&data=", 6) != 0)
return "invalid query string: invalid name / no data";
return NULL;
}
int main()
{
const char *query_string = getenv("QUERY_STRING");
if (query_string == NULL) {
generatepage("Internal error: invalid request");
} else if (NULL != validate(query_string)) {
generatepage(validate(query_string));
} else {
char *data[MAX_RECORDS] = {0};
if (!readdata(data, MAX_RECORDS)) {
generatepage("Failed to read file data");
return EXIT_SUCCESS;
}
char name[32] = {0};
strcpy(name, getname(query_string));
int index = -1;
for (int i = 0; i < MAX_RECORDS && data[i]; i++) {
if (strcmp(name, getname(data[i])) == 0) {
index = i;
break;
}
}
if (index == -1) {
generatepage("File not found");
return EXIT_SUCCESS;
}
// cleanup data...
char str[1000] = {0};
char *dst = str;
for (const char *src = query_string; *src; src++) {
*dst = *src;
dst++;
if (strncmp(src, "%25", 3) == 0 && isxdigit(src[3]) && isxdigit(src[4]))
src += 2;
}
data[index] = str;
sortdata(data, MAX_RECORDS);
FILE *f = fopen("data.txt", "wt");
if (f == NULL) {
generatepage("Failed to add file (access denied). Try again.");
return EXIT_SUCCESS;
}
for (int i = 0; i < MAX_RECORDS && data[i]; i++)
fprintf(f, "%s\n", data[i]);
fclose(f);
generatepage("saved.");
}
return EXIT_SUCCESS;
}