zip_extra_field_api.c File Reference

#include "zipint.h"

Go to the source code of this file.

Functions
ZIP_EXTERN int	zip_file_extra_field_delete (zip_t *za, zip_uint64_t idx, zip_uint16_t ef_idx, zip_flags_t flags)
ZIP_EXTERN int	zip_file_extra_field_delete_by_id (zip_t *za, zip_uint64_t idx, zip_uint16_t ef_id, zip_uint16_t ef_idx, zip_flags_t flags)
ZIP_EXTERN const zip_uint8_t *	zip_file_extra_field_get (zip_t *za, zip_uint64_t idx, zip_uint16_t ef_idx, zip_uint16_t *idp, zip_uint16_t *lenp, zip_flags_t flags)
ZIP_EXTERN const zip_uint8_t *	zip_file_extra_field_get_by_id (zip_t *za, zip_uint64_t idx, zip_uint16_t ef_id, zip_uint16_t ef_idx, zip_uint16_t *lenp, zip_flags_t flags)
ZIP_EXTERN zip_int16_t	zip_file_extra_fields_count (zip_t *za, zip_uint64_t idx, zip_flags_t flags)
ZIP_EXTERN zip_int16_t	zip_file_extra_fields_count_by_id (zip_t *za, zip_uint64_t idx, zip_uint16_t ef_id, zip_flags_t flags)
ZIP_EXTERN int	zip_file_extra_field_set (zip_t *za, zip_uint64_t idx, zip_uint16_t ef_id, zip_uint16_t ef_idx, const zip_uint8_t *data, zip_uint16_t len, zip_flags_t flags)
int	_zip_file_extra_field_prepare_for_change (zip_t *za, zip_uint64_t idx)

Function Documentation

_zip_file_extra_field_prepare_for_change()

int _zip_file_extra_field_prepare_for_change	(	zip_t *	za,
		zip_uint64_t	idx
	)

Definition at line 323 of file zip_extra_field_api.c.

                                                                      {
    zip_entry_t *e;
 
    if (idx >= za->nentry) {
        zip_error_set(&za->error, ZIP_ER_INVAL, 0);
        return -1;
    }
 
    e = za->entry + idx;
 
    if (e->changes && (e->changes->changed & ZIP_DIRENT_EXTRA_FIELD))
        return 0;
 
    if (e->orig) {
        if (_zip_read_local_ef(za, idx) < 0)
            return -1;
    }
 
    if (e->changes == NULL) {
        if ((e->changes = _zip_dirent_clone(e->orig)) == NULL) {
            zip_error_set(&za->error, ZIP_ER_MEMORY, 0);
            return -1;
        }
    }
 
    if (e->orig && e->orig->extra_fields) {
        if ((e->changes->extra_fields = _zip_ef_clone(e->orig->extra_fields, &za->error)) == NULL)
            return -1;
    }
    e->changes->changed |= ZIP_DIRENT_EXTRA_FIELD;
 
    return 0;
}

References _zip_dirent_clone(), _zip_ef_clone(), _zip_read_local_ef(), e, zip::entry, zip::error, setup::idx, zip::nentry, NULL, za, ZIP_DIRENT_EXTRA_FIELD, ZIP_ER_INVAL, ZIP_ER_MEMORY, and zip_error_set().

Referenced by zip_file_extra_field_delete(), zip_file_extra_field_delete_by_id(), and zip_file_extra_field_set().

zip_file_extra_field_delete()

ZIP_EXTERN int zip_file_extra_field_delete	(	zip_t *	za,
		zip_uint64_t	idx,
		zip_uint16_t	ef_idx,
		zip_flags_t	flags
	)

Definition at line 39 of file zip_extra_field_api.c.

                                                                                                 {
    zip_dirent_t *de;
 
    if ((flags & ZIP_EF_BOTH) == 0) {
        zip_error_set(&za->error, ZIP_ER_INVAL, 0);
        return -1;
    }
 
    if (((flags & ZIP_EF_BOTH) == ZIP_EF_BOTH) && (ef_idx != ZIP_EXTRA_FIELD_ALL)) {
        zip_error_set(&za->error, ZIP_ER_INVAL, 0);
        return -1;
    }
 
    if (_zip_get_dirent(za, idx, 0, NULL) == NULL)
        return -1;
 
    if (ZIP_IS_RDONLY(za)) {
        zip_error_set(&za->error, ZIP_ER_RDONLY, 0);
        return -1;
    }
 
    if (_zip_file_extra_field_prepare_for_change(za, idx) < 0)
        return -1;
 
    de = za->entry[idx].changes;
 
    de->extra_fields = _zip_ef_delete_by_id(de->extra_fields, ZIP_EXTRA_FIELD_ALL, ef_idx, flags);
    return 0;
}

References _zip_ef_delete_by_id(), _zip_file_extra_field_prepare_for_change(), _zip_get_dirent(), zip_entry::changes, zip::entry, zip::error, zip_dirent::extra_fields, flags, setup::idx, NULL, za, ZIP_EF_BOTH, ZIP_ER_INVAL, ZIP_ER_RDONLY, zip_error_set(), ZIP_EXTRA_FIELD_ALL, and ZIP_IS_RDONLY.

Referenced by delete_extra().

zip_file_extra_field_delete_by_id()

ZIP_EXTERN int zip_file_extra_field_delete_by_id	(	zip_t *	za,
		zip_uint64_t	idx,
		zip_uint16_t	ef_id,
		zip_uint16_t	ef_idx,
		zip_flags_t	flags
	)

Definition at line 71 of file zip_extra_field_api.c.

                                                                                                                           {
    zip_dirent_t *de;
 
    if ((flags & ZIP_EF_BOTH) == 0) {
        zip_error_set(&za->error, ZIP_ER_INVAL, 0);
        return -1;
    }
 
    if (((flags & ZIP_EF_BOTH) == ZIP_EF_BOTH) && (ef_idx != ZIP_EXTRA_FIELD_ALL)) {
        zip_error_set(&za->error, ZIP_ER_INVAL, 0);
        return -1;
    }
 
    if (_zip_get_dirent(za, idx, 0, NULL) == NULL)
        return -1;
 
    if (ZIP_IS_RDONLY(za)) {
        zip_error_set(&za->error, ZIP_ER_RDONLY, 0);
        return -1;
    }
 
    if (_zip_file_extra_field_prepare_for_change(za, idx) < 0)
        return -1;
 
    de = za->entry[idx].changes;
 
    de->extra_fields = _zip_ef_delete_by_id(de->extra_fields, ef_id, ef_idx, flags);
    return 0;
}

References _zip_ef_delete_by_id(), _zip_file_extra_field_prepare_for_change(), _zip_get_dirent(), zip_entry::changes, zip::entry, zip::error, zip_dirent::extra_fields, flags, setup::idx, NULL, za, ZIP_EF_BOTH, ZIP_ER_INVAL, ZIP_ER_RDONLY, zip_error_set(), ZIP_EXTRA_FIELD_ALL, and ZIP_IS_RDONLY.

Referenced by delete_extra_by_id().

zip_file_extra_field_get()

ZIP_EXTERN const zip_uint8_t* zip_file_extra_field_get	(	zip_t *	za,
		zip_uint64_t	idx,
		zip_uint16_t	ef_idx,
		zip_uint16_t *	idp,
		zip_uint16_t *	lenp,
		zip_flags_t	flags
	)

Definition at line 103 of file zip_extra_field_api.c.

                                                                                                                                     {
    static const zip_uint8_t empty[1] = {'\0'};
 
    zip_dirent_t *de;
    zip_extra_field_t *ef;
    int i;
 
    if ((flags & ZIP_EF_BOTH) == 0) {
        zip_error_set(&za->error, ZIP_ER_INVAL, 0);
        return NULL;
    }
 
    if ((de = _zip_get_dirent(za, idx, flags, &za->error)) == NULL)
        return NULL;
 
    if (flags & ZIP_FL_LOCAL)
        if (_zip_read_local_ef(za, idx) < 0)
            return NULL;
 
    i = 0;
    for (ef = de->extra_fields; ef; ef = ef->next) {
        if (ef->flags & flags & ZIP_EF_BOTH) {
            if (i < ef_idx) {
                i++;
                continue;
            }
 
            if (idp)
                *idp = ef->id;
            if (lenp)
                *lenp = ef->size;
            if (ef->size > 0)
                return ef->data;
            else
                return empty;
        }
    }
 
    zip_error_set(&za->error, ZIP_ER_NOENT, 0);
    return NULL;
}

References _zip_get_dirent(), _zip_read_local_ef(), ef::data, ef, zip::error, zip_dirent::extra_fields, flags, ef::flags, i, ef::id, setup::idx, NULL, ef::size, za, ZIP_EF_BOTH, ZIP_ER_INVAL, ZIP_ER_NOENT, zip_error_set(), and ZIP_FL_LOCAL.

Referenced by ef_read(), and get_extra().

zip_file_extra_field_get_by_id()

ZIP_EXTERN const zip_uint8_t* zip_file_extra_field_get_by_id	(	zip_t *	za,
		zip_uint64_t	idx,
		zip_uint16_t	ef_id,
		zip_uint16_t	ef_idx,
		zip_uint16_t *	lenp,
		zip_flags_t	flags
	)

Definition at line 147 of file zip_extra_field_api.c.

                                                                                                                                            {
    zip_dirent_t *de;
 
    if ((flags & ZIP_EF_BOTH) == 0) {
        zip_error_set(&za->error, ZIP_ER_INVAL, 0);
        return NULL;
    }
 
    if ((de = _zip_get_dirent(za, idx, flags, &za->error)) == NULL)
        return NULL;
 
    if (flags & ZIP_FL_LOCAL)
        if (_zip_read_local_ef(za, idx) < 0)
            return NULL;
 
    return _zip_ef_get_by_id(de->extra_fields, lenp, ef_id, ef_idx, flags, &za->error);
}

References _zip_ef_get_by_id(), _zip_get_dirent(), _zip_read_local_ef(), zip::error, zip_dirent::extra_fields, flags, setup::idx, NULL, za, ZIP_EF_BOTH, ZIP_ER_INVAL, zip_error_set(), and ZIP_FL_LOCAL.

Referenced by get_extra_by_id().

zip_file_extra_field_set()

ZIP_EXTERN int zip_file_extra_field_set	(	zip_t *	za,
		zip_uint64_t	idx,
		zip_uint16_t	ef_id,
		zip_uint16_t	ef_idx,
		const zip_uint8_t *	data,
		zip_uint16_t	len,
		zip_flags_t	flags
	)

Definition at line 221 of file zip_extra_field_api.c.

                                                                                                                                                             {
    zip_dirent_t *de;
    zip_uint16_t ls, cs;
    zip_extra_field_t *ef, *ef_prev, *ef_new;
    int i, found, new_len;
 
    if ((flags & ZIP_EF_BOTH) == 0) {
        zip_error_set(&za->error, ZIP_ER_INVAL, 0);
        return -1;
    }
 
    if (_zip_get_dirent(za, idx, 0, NULL) == NULL)
        return -1;
 
    if (ZIP_IS_RDONLY(za)) {
        zip_error_set(&za->error, ZIP_ER_RDONLY, 0);
        return -1;
    }
 
    if (ZIP_EF_IS_INTERNAL(ef_id)) {
        zip_error_set(&za->error, ZIP_ER_INVAL, 0);
        return -1;
    }
 
    if (_zip_file_extra_field_prepare_for_change(za, idx) < 0)
        return -1;
 
    de = za->entry[idx].changes;
 
    ef = de->extra_fields;
    ef_prev = NULL;
    i = 0;
    found = 0;
 
    for (; ef; ef = ef->next) {
        if (ef->id == ef_id && (ef->flags & flags & ZIP_EF_BOTH)) {
            if (i == ef_idx) {
                found = 1;
                break;
            }
            i++;
        }
        ef_prev = ef;
    }
 
    if (i < ef_idx && ef_idx != ZIP_EXTRA_FIELD_NEW) {
        zip_error_set(&za->error, ZIP_ER_INVAL, 0);
        return -1;
    }
 
    if (flags & ZIP_EF_LOCAL)
        ls = _zip_ef_size(de->extra_fields, ZIP_EF_LOCAL);
    else
        ls = 0;
    if (flags & ZIP_EF_CENTRAL)
        cs = _zip_ef_size(de->extra_fields, ZIP_EF_CENTRAL);
    else
        cs = 0;
 
    new_len = ls > cs ? ls : cs;
    if (found)
        new_len -= ef->size + 4;
    new_len += len + 4;
 
    if (new_len > ZIP_UINT16_MAX) {
        zip_error_set(&za->error, ZIP_ER_INVAL, 0);
        return -1;
    }
 
    if ((ef_new = _zip_ef_new(ef_id, len, data, flags)) == NULL) {
        zip_error_set(&za->error, ZIP_ER_MEMORY, 0);
        return -1;
    }
 
    if (found) {
        if ((ef->flags & ZIP_EF_BOTH) == (flags & ZIP_EF_BOTH)) {
            ef_new->next = ef->next;
            ef->next = NULL;
            _zip_ef_free(ef);
            if (ef_prev)
                ef_prev->next = ef_new;
            else
                de->extra_fields = ef_new;
        }
        else {
            ef->flags &= ~(flags & ZIP_EF_BOTH);
            ef_new->next = ef->next;
            ef->next = ef_new;
        }
    }
    else if (ef_prev) {
        ef_new->next = ef_prev->next;
        ef_prev->next = ef_new;
    }
    else
        de->extra_fields = ef_new;
 
    return 0;
}

References _zip_ef_free(), _zip_ef_new(), _zip_ef_size(), _zip_file_extra_field_prepare_for_change(), _zip_get_dirent(), zip_entry::changes, test_evm::cs, ef, zip::entry, zip::error, zip_dirent::extra_fields, flags, ef::flags, found, i, ef::id, setup::idx, len, zip_extra_field::next, NULL, ef::size, za, ZIP_EF_BOTH, ZIP_EF_CENTRAL, ZIP_EF_IS_INTERNAL, ZIP_EF_LOCAL, ZIP_ER_INVAL, ZIP_ER_MEMORY, ZIP_ER_RDONLY, zip_error_set(), ZIP_EXTRA_FIELD_NEW, ZIP_IS_RDONLY, and ZIP_UINT16_MAX.

Referenced by set_extra().

zip_file_extra_fields_count()

ZIP_EXTERN zip_int16_t zip_file_extra_fields_count	(	zip_t *	za,
		zip_uint64_t	idx,
		zip_flags_t	flags
	)

Definition at line 167 of file zip_extra_field_api.c.

                                                                            {
    zip_dirent_t *de;
    zip_extra_field_t *ef;
    zip_uint16_t n;
 
    if ((flags & ZIP_EF_BOTH) == 0) {
        zip_error_set(&za->error, ZIP_ER_INVAL, 0);
        return -1;
    }
 
    if ((de = _zip_get_dirent(za, idx, flags, &za->error)) == NULL)
        return -1;
 
    if (flags & ZIP_FL_LOCAL)
        if (_zip_read_local_ef(za, idx) < 0)
            return -1;
 
    n = 0;
    for (ef = de->extra_fields; ef; ef = ef->next)
        if (ef->flags & flags & ZIP_EF_BOTH)
            n++;
 
    return (zip_int16_t)n;
}

References _zip_get_dirent(), _zip_read_local_ef(), ef, zip::error, zip_dirent::extra_fields, flags, ef::flags, setup::idx, n, NULL, za, ZIP_EF_BOTH, ZIP_ER_INVAL, zip_error_set(), and ZIP_FL_LOCAL.

Referenced by count_extra(), and ef_read().

zip_file_extra_fields_count_by_id()

ZIP_EXTERN zip_int16_t zip_file_extra_fields_count_by_id	(	zip_t *	za,
		zip_uint64_t	idx,
		zip_uint16_t	ef_id,
		zip_flags_t	flags
	)

Definition at line 194 of file zip_extra_field_api.c.

                                                                                                      {
    zip_dirent_t *de;
    zip_extra_field_t *ef;
    zip_uint16_t n;
 
    if ((flags & ZIP_EF_BOTH) == 0) {
        zip_error_set(&za->error, ZIP_ER_INVAL, 0);
        return -1;
    }
 
    if ((de = _zip_get_dirent(za, idx, flags, &za->error)) == NULL)
        return -1;
 
    if (flags & ZIP_FL_LOCAL)
        if (_zip_read_local_ef(za, idx) < 0)
            return -1;
 
    n = 0;
    for (ef = de->extra_fields; ef; ef = ef->next)
        if (ef->id == ef_id && (ef->flags & flags & ZIP_EF_BOTH))
            n++;
 
    return (zip_int16_t)n;
}

References _zip_get_dirent(), _zip_read_local_ef(), ef, zip::error, zip_dirent::extra_fields, flags, ef::flags, ef::id, setup::idx, n, NULL, za, ZIP_EF_BOTH, ZIP_ER_INVAL, zip_error_set(), and ZIP_FL_LOCAL.

Referenced by count_extra_by_id().