mirror of git://git.sysmocom.de/ofono
simutil: add validate_utf8_tlv
Add helper to validate if TLV value is a valid UTF8 string. Note that both null-terminated and non null-terminated UTF8 strings are considered valid.
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@ -765,6 +765,20 @@ unsigned char *comprehension_tlv_builder_get_data(
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return tlv + tag_size + len_size;
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}
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gboolean validate_utf8_tlv(const unsigned char *tlv)
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{
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int len = tlv[1];
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if (len == 0)
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return FALSE;
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/* support both null-terminated and non null-terminated TLV value */
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if (tlv[len + 1] == '\0')
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len -= 1;
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return g_utf8_validate_len((const char *)tlv + 2, len, NULL);
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}
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static char *sim_network_name_parse(const unsigned char *buffer, int length,
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gboolean *add_ci)
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{
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@ -403,6 +403,7 @@ gboolean comprehension_tlv_builder_set_length(
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unsigned int len);
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unsigned char *comprehension_tlv_builder_get_data(
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struct comprehension_tlv_builder *builder);
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gboolean validate_utf8_tlv(const unsigned char *data);
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void ber_tlv_iter_init(struct ber_tlv_iter *iter, const unsigned char *pdu,
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unsigned int len);
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