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#ifndef __DILLO_MISC_H__
#define __DILLO_MISC_H__
#include <stddef.h> /* for size_t */
#include <ctype.h> /* iscntrl, isascii */
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#define d_isascii(c) (((c) & ~0x7f) == 0)
char *a_Misc_escape_chars(const char *str, const char *esc_set);
int a_Misc_expand_tabs(char **start, char *end, char *buf, int buflen);
int a_Misc_get_content_type_from_data(void *Data, size_t Size,const char **PT);
int a_Misc_content_type_check(const char *EntryType, const char *DetectedType);
void a_Misc_parse_content_type(const char *str, char **major, char **minor,
char **charset);
int a_Misc_content_type_cmp(const char* ct1, const char *ct2);
int a_Misc_parse_geometry(char *geom, int *x, int *y, int *w, int *h);
int a_Misc_parse_search_url(char *source, char **label, char **urlstr);
char *a_Misc_encode_base64(const char *in);
Dstr *a_Misc_file2dstr(const char *filename);
/**
* Parse Content-Disposition string, e.g., "attachment; filename="file name.jpg"".
* Content-Disposition is defined in RFC 6266
*/
static inline void a_Misc_parse_content_disposition(const char *disposition, char **type, char **filename)
{
static const char tspecials_space[] = "()<>@,;:\\\"/[]?= ";
const char terminators[] = " ;\t";
const char *str, *s;
if (type)
*type = NULL;
if (filename)
*filename = NULL;
if (!(str = disposition))
return;
for (s = str; *s && d_isascii((uchar_t)*s) && !iscntrl((uchar_t)*s) &&
!strchr(tspecials_space, *s); s++) ;
if (type && !(s == str))
*type = dStrndup(str, s - str);
if (!*type) {
return;
}
if (!strchr(terminators, *s)) {
*type = NULL;
return;
}
if (*s == ';') {
bool_t quoted = FALSE;
const char key[] = "filename";
if ((s = dStriAsciiStr(str, key)) &&
(s == str || strchr(terminators, s[-1]))) {
s += sizeof(key) - 1;
for ( ; *s == ' ' || *s == '\t'; ++s);
if (*s == '=') {
size_t len = 0;
for (++s; *s == ' ' || *s == '\t'; ++s);
if (*s == '"') {
quoted = TRUE;
s++;
for ( ; *s == '.'; ++s);
bool_t escaped = FALSE;
const char *c;
unsigned int maxlen = strlen(s);
for (c = s; !(*c == '"' && !escaped); c++) {
if ((len = c - s + 1) > maxlen) {
return;
}
escaped = *c == '\\';
}
*filename = dStrndup(s, len);
} else {
for ( ; *s == '.'; ++s);
if ((len = strcspn(s, terminators))) {
*filename = dStrndup(s, len);
}
}
const char invalid_characters[] = "/\\|~";
char *s = *filename, *d = *filename;
for ( ; s < *filename + len; s++) {
if (strchr(invalid_characters, *s)) {
// If this is a backslash preceding a quote, we want to just
// skip past it without advancing the destination pointer or
// copying anything.
if (!(*s == '\\' && *(s+1) == '"')) {
*d = '_';
d++;
}
} else if (!quoted && (!d_isascii((uchar_t)*s) || *s == '=')) {
*filename = NULL;
return;
} else {
*d = *s;
d++;
}
}
// Truncate filename to deal with the string being shorter if we
// skipped over any backslash characters in the above loop
if (s != d) {
*d = '\0';
}
}
}
}
}
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __DILLO_MISC_H__ */
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