On Tuesday, January 19, 2021 4:20 PM, Pascal Quantin wrote:
Hi Pascal,
On Tuesday, January 19, 2021 11:19 AM, Pascal Quantin wrote:
Hi Joey,
Hi all,
In commit 33af2649 [1] we can keep dissecting the contents of the req, adv, and res packets by setting
while (plen > 0) { }
either in `dissect_git_pdu()` or in `dissect_one_pkt_line()`, but for now in `dissect_git_pdu()` it'd be a bit messy, so wanted to ask for your feedback for getting `dissect_one_pkt_line()` to work properly first.
As you can see in pcap 169 [2], it correctly parses the length of the first line as 0x0014 (20 bytes) until `0x0a`, then it's supposed to get the length of the next line by the first 4 hex bytes in that line, but instead of reading the length as 0x0018 (24 bytes) it's reading it as 0x0010 (16 bytes), and anyways, this particular line's length actually is 59 bytes.
Suggestions on how to approach this?
Yes, the code on that commit is what gives the parsing of the screenshot.
So what mechanism is used to call dissect_one_plt_line() a second time? With only screenshots and no pcap / code to look at, we can hardly help.
The code has already been provided. I confirm again that there hasn't been other lines added other than what's in that commit.
Does it mean that packet-http.c calls your dissector per line? Please provide more info, or even better share the pcap if you want us to provide some help.
Please find attached the pcap I'm using with the patch from the commit. As you can see, the way 167 and 255 are parsed is similar, but I'm referring specifically to 169 for now ("To-do" in line 121 will be for the cases where there's a 0000 terminator packet like the end of the first-line in 167) .
Thanks,
Joey
Attachment:
https_dump1.pcapng
Description: application/pcapng
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https_dump1.zip
Description: Zip archive