FreeCalypso > hg > freecalypso-hwlab
diff uicc/select.c @ 134:69628bcfec17
fc-uicc-tool: iccid command implemented
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Thu, 04 Feb 2021 02:28:52 +0000 |
parents | 5af88fa11b54 |
children | 51d6aaa43a7b |
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--- a/uicc/select.c Thu Feb 04 01:45:16 2021 +0000 +++ b/uicc/select.c Thu Feb 04 02:28:52 2021 +0000 @@ -151,3 +151,75 @@ return(rc); return parse_and_display_select_response(); } + +u_char * +extract_select_resp_tag(sought_tag) + unsigned sought_tag; +{ + unsigned offset, totlen, reclen; + u_char *dp, *endp; + int rc; + + rc = select_resp_header_check(&offset, &totlen); + if (rc < 0) + return(0); + dp = sim_resp_data + offset; + endp = sim_resp_data + offset + totlen; + while (dp < endp) { + if (endp - dp < 2) { +trunc_error: fprintf(stderr, + "error: truncated TLV record in SELECT response\n"); + return(0); + } + if ((dp[0] & 0x1F) == 0x1F) { + fprintf(stderr, + "error: extended tag not supported in SELECT response\n"); + return(0); + } + if (dp[1] & 0x80) { + fprintf(stderr, + "error: extended length not supported in SELECT response\n"); + return(0); + } + reclen = dp[1] + 2; + if (endp - dp < reclen) + goto trunc_error; + if (dp[0] == sought_tag) + return(dp); + dp += reclen; + } + fprintf(stderr, "error: tag 0x%02X not found in SELECT response\n", + sought_tag); + return(0); +} + +select_resp_get_transparent(lenp) + unsigned *lenp; +{ + u_char *tlv; + + tlv = extract_select_resp_tag(0x82); + if (!tlv) + return(-1); + if (tlv[1] != 2) { +bad_file_desc: fprintf(stderr, "error: file type is not transparent EF\n"); + return(-1); + } + if (tlv[2] & 0x80) + goto bad_file_desc; + if ((tlv[2] & 0x38) == 0x38) + goto bad_file_desc; + if ((tlv[2] & 0x07) != 0x01) + goto bad_file_desc; + tlv = extract_select_resp_tag(0x80); + if (!tlv) + return(-1); + if (tlv[1] != 2) { + fprintf(stderr, + "error: file size TLV element has wrong length\n"); + return(-1); + } + if (lenp) + *lenp = (tlv[2] << 8) | tlv[3]; + return(0); +}